[1] St Orsola Malpighi Polyclin, Rheumatol Unit, Bologna, Italy
[2] Univ Hosp Montpellier, Clin Res & Epidemiolgy Unit, Montpellier, France
[3] Univ Lorraine, CIC 1433 Clin Epidemiol, CHRU Nancy, INSERM, Vandoeuvre Les Nancy, France
[4] Univ Caen Normandie, Univ Lorraine, CHU Caen, Caen, France
[5] Univ Hosp Montpellier, Clin Immunol & Osteoarticular Dis Therapeut Unit, Montpellier, France