Affiliation: | (1) Division of Rheumatology, University Hospital of Geneva, H?pital Beau-S?jour, 26 av. Beau-S?jour, 1211 Geneva 14, Switzerland;(2) Division of General Medical Rehabilitation, University Hospital of Geneva, Geneva, Switzerland;(3) Division of Rheumatology, CHU Henri-Mondor Cr?teil, Paris, France;(4) Division of Rheumatology, CHU de la Piti?-Salpetri?re, Paris, France;(5) Spine Centre, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland;(6) Division of Orthopaedic Surgery, University Hospital of Geneva, Geneva, Switzerland;(7) Division of Rheumatology, HRF-H?pital Cantonal, Fribourg, Switzerland;(8) Schulthess Clinic, Zurich, Switzerland |