[1] Univ Paris 05, Cochin Hosp, Dept Rheumatol, Paris, France
[2] Univ Liege, Dept Epidemiol Publ Hlth & Hlth Econom, Liege, Belgium
[3] Warsawian Ctr Osteoporosis & Calcium Metab, Warsaw, Poland
[4] Semmelweis Univ, Dept Internal Med 2, H-1085 Budapest, Hungary
[5] Univ Studi Padova, Dipartimento Scienze Med & Chirurg, Padua, Italy
[6] Hosp 12 Octubre, Servicio Reumatol, E-28041 Madrid, Spain
[7] Sir Charles Gairdner Hosp, Dept Med, Perth, WA, Australia
[8] Nord Hosp, Dept Rheumatol, Amiens, France
[9] Hvidovre Univ Hosp, Osteoporosis Res Ctr, Dept 545, DK-2650 Hvidovre, Denmark
[10] Hop Edouard Herriot, Dept Rheumatol & Bone Dis, Lyon, France