title: Erratum to: Vitamin D deficiency in patients with either rheumatic diseases or inflammatory bowel diseases on biologic therapy.
authors.affiliation: Medicina Interna, Reumatologia e Gastroenterologia, Ospedale Nuovo Regina Margherita, Via E. Morosini, 30, 00153, Rome, Italy.
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Bruzzese
authors.affiliation: Medicina Interna, Reumatologia e Gastroenterologia, Ospedale Nuovo Regina Margherita, Via E. Morosini, 30, 00153, Rome, Italy. angelozullo66@yahoo.it.
authors.forename: Angelo
authors.initials: A
authors.lastname: Zullo
authors.affiliation: Allergy, Clinical Immunology and Rheumatology, 'Sapienza' University of Rome, S. Andrea University Hospital, Rome, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Picchianti Diamanti
authors.affiliation: Gastroenterology Unit, Sapienza University of Rome "Polo Pontino" Hospital, Latina, Italy.
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Ridola
authors.affiliation: Medicina Interna, Reumatologia e Gastroenterologia, Ospedale Nuovo Regina Margherita, Via E. Morosini, 30, 00153, Rome, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Lorenzetti
authors.affiliation: Medicina Interna, Reumatologia e Gastroenterologia, Ospedale Nuovo Regina Margherita, Via E. Morosini, 30, 00153, Rome, Italy.
authors.forename: Cinzia
authors.initials: C
authors.lastname: Marrese
authors.affiliation: Medicina Interna, Reumatologia e Gastroenterologia, Ospedale Nuovo Regina Margherita, Via E. Morosini, 30, 00153, Rome, Italy.
authors.forename: Palma
authors.initials: P
authors.lastname: Scolieri
authors.affiliation: Gastroenteroolgy Unit, 'RiUniti' Hospital, Foggia, Italy.
authors.forename: Vincenzo
authors.initials: V
authors.lastname: De Francesco
authors.affiliation: Medicina Interna, Reumatologia e Gastroenterologia, Ospedale Nuovo Regina Margherita, Via E. Morosini, 30, 00153, Rome, Italy.
authors.forename: Cesare
authors.initials: C
authors.lastname: Hassan
authors.affiliation: Rheumatology Unit, San Pietro Fatebenefratelli Hospital, Rome, Italy.
authors.forename: Alberto
authors.initials: A
authors.lastname: Migliore
authors.affiliation: Allergy, Clinical Immunology and Rheumatology, 'Sapienza' University of Rome, S. Andrea University Hospital, Rome, Italy.
authors.forename: Bruno
authors.initials: B
authors.lastname: Laganà