title: Definition and Reliability Assessment of Elementary Ultrasonographic Findings in Calcium Pyrophosphate Deposition Disease: A Study by the OMERACT Calcium Pyrophosphate Deposition Disease Ultrasound Subtask Force.
abstract: OBJECTIVE
  To define the ultrasonographic characteristics of calcium pyrophosphate crystal (CPP) deposits in joints and periarticular tissues and to evaluate the intra- and interobserver reliability of expert ultrasonographers in the assessment of CPP deposition disease (CPPD) according to the new definitions.
  
  
  METHODS
  After a systematic literature review, a Delphi survey was circulated among a group of expert ultrasonographers, who were members of the CPPD Ultrasound (US) Outcome Measures in Rheumatology (OMERACT) subtask force, to obtain definitions of the US characteristics of CPPD at the level of fibrocartilage (FC), hyaline cartilage (HC), tendon, and synovial fluid (SF). Subsequently, the reliability of US in assessing CPPD at knee and wrist levels according to the agreed definitions was tested in static images and in patients with CPPD. Cohen's κ was used for statistical analysis.
  
  
  RESULTS
  HC and FC of the knee yielded the highest interobserver κ values among all the structures examined, in both the Web-based (0.73 for HC and 0.58 for FC) and patient-based exercises (0.55 for the HC and 0.64 for the FC). Kappa values for the other structures were lower, ranging from 0.28 in tendons to 0.50 in SF in the static exercise and from 0.09 (proximal patellar tendon) to 0.27 (triangular FC of the wrist) in the patient-based exercise.
  
  
  CONCLUSIONS
  The new OMERACT definitions for the US identification of CPPD proved to be reliable at the level of the HC and FC of the knee. Further studies are needed to better define the US characteristics of CPPD and optimize the scanning technique in other anatomical sites.
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland. gf.filippou@gmail.com.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino. gf.filippou@gmail.com.
authors.forename: Georgios
authors.initials: G
authors.lastname: Filippou
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Carlo A
authors.initials: CA
authors.lastname: Scirè
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Nemanja
authors.initials: N
authors.lastname: Damjanov
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Antonella
authors.initials: A
authors.lastname: Adinolfi
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Greta
authors.initials: G
authors.lastname: Carrara
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Valentina
authors.initials: V
authors.lastname: Picerno
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Carmela
authors.initials: C
authors.lastname: Toscano
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: George A
authors.initials: GA
authors.lastname: Bruyn
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Maria Antonietta
authors.initials: MA
authors.lastname: D'Agostino
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Andrea
authors.initials: A
authors.lastname: Delle Sedie
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Emilio
authors.initials: E
authors.lastname: Filippucci
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Marwin
authors.initials: M
authors.lastname: Gutierrez
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Mihaela
authors.initials: M
authors.lastname: Micu
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Ingrid
authors.initials: I
authors.lastname: Möller
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Esperanza
authors.initials: E
authors.lastname: Naredo
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Carlos
authors.initials: C
authors.lastname: Pineda
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Francesco
authors.initials: F
authors.lastname: Porta
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Wolfgang A
authors.initials: WA
authors.lastname: Schmidt
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Lene
authors.initials: L
authors.lastname: Terslev
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Violeta
authors.initials: V
authors.lastname: Vlad
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Pascal
authors.initials: P
authors.lastname: Zufferey
authors.affiliation: From the University of Siena, Siena; Italian Society for Rheumatology (SIR) Epidemiology Unit, Milan; University of Pisa, Pisa; Università Politecnica delle Marche, Jesi; Internal Medicine Division, San Jacopo Hospital, Pistoia; Università degli Studi di Torino, Turin, Italy; University of Belgrade, Belgrade, Serbia; Department of Rheumatology, MC Groep, Lelystad, the Netherlands; APHP, Hôpital Ambroise Paré, Rheumatology Department, Boulogne-Billancourt; INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University, Saint-Quentin en Yvelines, France; Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra, Mexico City, Mexico; Rehabilitation Clinical Hospital, Cluj-Napoca; Sf. Maria Hospital, Bucharest, Romania; Instituto Poal, University of Barcelona, Barcelona; Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University, Madrid, Spain; Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch Berlin, Berlin, Germany; Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen, Denmark; Lausanne University Hospital, Lausanne, Switzerland.|G. Filippou, MD, PhD, University of Siena; C.A. Scirè, MD, Professor of Rheumatology, SIR Epidemiology Unit; N. Damjanov, MD, PhD, Professor of Rheumatology, University of Belgrade; A. Adinolfi, MD, University of Siena; G. Carrara, MSc, SIR Epidemiology Unit; V. Picerno, MD, University of Siena; C. Toscano, MD, University of Siena; G.A. Bruyn, MD, Professor of Rheumatology, Department of Rheumatology, MC Groep; M.A. D'Agostino, MD, PhD, APHP, Hôpital Ambroise Paré, Rheumatology Department, and INSERM U1173, Laboratoire d'Excellence INFLAMEX, UFR Simone Veil, Versailles-Saint-Quentin University; A. Delle Sedie, MD, University of Pisa; E. Filippucci, MD, PhD, Senior Lecturer in Rheumatology, Università Politecnica delle Marche; M. Gutierrez, MD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; M. Micu, MD, Rehabilitation Clinical Hospital; I. Möller, MD, PhD, Instituto Poal, University of Barcelona; E. Naredo, MD, Department of Rheumatology, Joint and Bone Research Unit, Hospital Universitario Fundación Jimenez Deaz and Autónoma University; C. Pineda, MD, PhD, Division of Musculoskeletal and Rheumatic Diseases, Instituto Nacional de Rehabilitacion Luis Guillermo Ibarra Ibarra; F. Porta, MD, Internal Medicine Division, San Jacopo Hospital; W.A. Schmidt, MD, Professor of Charité University Medicine, Immanuel Krankenhaus Berlin, Medical Center for Rheumatology Berlin-Buch; L. Terslev, MD, PhD, Center for Rheumatology and Spine Diseases, Rigshospitalet; V. Vlad, MD, PhD, Sf. Maria Hospital; P. Zufferey, MD, Lausanne University Hospital; A. Iagnocco, MD, Professor of Rheumatology, Università degli Studi di Torino.
authors.forename: Annamaria
authors.initials: A
authors.lastname: Iagnocco
mesh_terms: D002805:Chondrocalcinosis / Q000000981:diagnostic imaging*; D003697:Delphi Technique; D006801:Humans; D051457:Hyaline Cartilage / Q000000981:diagnostic imaging*; D007719:Knee Joint / Q000000981:diagnostic imaging*; D015203:Reproducibility of Results; D013582:Synovial Fluid / Q000000981:diagnostic imaging; D013710:Tendons / Q000000981:diagnostic imaging; D014463:Ultrasonography / Q000379:methods*; D014955:Wrist Joint / Q000000981:diagnostic imaging*
keywords: CHONDROCALCINOSIS; KNEE OSTEOARTHRITIS; OSTEOARTHRITIS; ULTRASONOGRAPHY