[1] Univ Lyon 1, INSERM, U831, F-69365 Lyon, France
[2] Helen Hayes Hosp, Bone Ctr, W Haverstraw, NY USA
[3] McMaster Univ, St Joseph Hosp, Hamilton, ON, Canada
[4] Univ Verona, I-37100 Verona, Italy
[5] Katholieke Univ Leuven, Leuven Univ Ctr Metab Bone Dis, Div Geriatr Med, Louvain, Belgium
[6] Univ Cambridge, Sch Clin Med, Addenbrookes Hosp, Cambridge, England
[7] Univ Southampton, Southampton Gen Hosp, MRC Epidemiol Resource Ctr, Southampton, Hants, England
[8] Univ Oxford, Norman Collisson Chair Musculoskeletal Sci, Oxford, England
[9] Autonomous Univ Barcelona, Hosp del Mar, Barcelona, Spain
[10] Hop Cochin, Ctr Evaluat Malad Osseuses, F-75674 Paris, France
[11] UMASS, Sch Med, Worcester, MA USA