[1] Ctr Hosp, Serv Rhumatol, F-59322 Valenciennes, France
[2] Hop Roger Salengro, Dept Univ Rhumatol, F-59037 Lille, France
[3] Hop Purpan, Serv Rhumatol, F-31059 Toulouse, France
[4] CHU Bellevue, INSERM, U1059, Serv Rhumatol, F-42055 St Etienne, France
[5] Univ Angers, Serv Rhumatol, CHU Angers, F-49033 Angers 01, France
[6] Grp Hosp Paris St Joseph, Serv Rhumatol, F-75674 Paris 14, France