[1] Paris Descartes Univ, Cochin Hosp, AP HP, Rheumatol Dept A, F-75014 Paris, France
[2] Paris Descartes Univ, Cochin Hosp, AP HP, Dept Gastroenterol, F-75014 Paris, France
[3] Mangiagalli Regina Elena Fdn, Immunol Clin, Dept Immunol, Milan, Italy
[4] Univ Verona, Dept Med, I-37100 Verona, Italy
[5] Thomas Jefferson Univ, Dept Med, Div Rheumatol, Philadelphia, PA 19107 USA
[6] Univ Lille 2, Lille, France
[7] Univ Roma La Sapienza, Med Clin, Rome, Italy
[8] Univ Roma La Sapienza, Therapy Dept, Rome, Italy
[9] Med Univ Lublin, Dept Dermatol, Lublin, Poland
[10] Russian Acad Med Sci, Inst Rheumatol, Dept Rheumatol, Moscow 109801, Russia
[11] Univ Florence, Div Rheumatol AOUC, Dept Biomed, Florence, Italy