title: Authors' reply.
authors.affiliation: a Internal Medicine and Cardioangiology Unit, Biomedical Department of Internal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: A
authors.initials: A
authors.lastname: Tuttolomondo
authors.affiliation: a Internal Medicine and Cardioangiology Unit, Biomedical Department of Internal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: R
authors.initials: R
authors.lastname: Pecoraro
authors.affiliation: a Internal Medicine and Cardioangiology Unit, Biomedical Department of Internal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: C
authors.initials: C
authors.lastname: Buttà
authors.affiliation: a Internal Medicine and Cardioangiology Unit, Biomedical Department of Internal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: D
authors.initials: D
authors.lastname: Di Raimondo
authors.affiliation: b Rheumatology Unit, Biomedical Department of lnternal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: A
authors.initials: A
authors.lastname: Ferrante
authors.affiliation: a Internal Medicine and Cardioangiology Unit, Biomedical Department of Internal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: V
authors.initials: V
authors.lastname: Della Corte
authors.affiliation: b Rheumatology Unit, Biomedical Department of lnternal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: F
authors.initials: F
authors.lastname: Ciccia
authors.affiliation: c Section of Clinical Biochemistry and Molecular Clinical Medicine, Department of Medical and Forensic Biopathology and Biotechnology , University of Palermo , Palermo , Italy.
authors.forename: C
authors.initials: C
authors.lastname: Bellia
authors.affiliation: b Rheumatology Unit, Biomedical Department of lnternal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: A
authors.initials: A
authors.lastname: Giardina
authors.affiliation: b Rheumatology Unit, Biomedical Department of lnternal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: A
authors.initials: A
authors.lastname: Raffa
authors.affiliation: c Section of Clinical Biochemistry and Molecular Clinical Medicine, Department of Medical and Forensic Biopathology and Biotechnology , University of Palermo , Palermo , Italy.
authors.forename: M
authors.initials: M
authors.lastname: Ciaccio
authors.affiliation: a Internal Medicine and Cardioangiology Unit, Biomedical Department of Internal Medicine and Specialties , University of Palermo , Palermo , Italy.
authors.forename: A
authors.initials: A
authors.lastname: Pinto