[1] Lund Univ, Dept Orthoped, Skane Univ Hosp Malmo, Malmo, Sweden
[2] Leuven Univ, Div Gerontol & Geriatr, Louvain, Belgium
[3] Leuven Univ, Ctr Musculoskeletal Res, Dept Expt Med, Louvain, Belgium
[4] Int Osteoporosis Fdn, Nyon, Switzerland
[5] Univ Florence, Dept Internal Med, Florence, Italy
[6] Harvard Univ, Sch Med, Dept Orthoped Surg, Boston, MA 02115 USA
[7] ETH, AO Clin Prior Program Fracture Fixat Osteoporot B, Inst Biomech, Zurich, Switzerland
[8] New Mexico Clin Res & Osteoporosis Ctr, Albuquerque, NM USA
[9] Univ Athens, Lab Res Musculoskeletal Syst, KAT Hosp, Kifisia, Greece
[10] Univ Coll London, Inst Orthopaed & Musculoskeletal Sci, Royal Natl Orthopaed Hosp, Stanmore, Middx, England
[11] Skane Univ Hosp, Dept Orthopaed, S-20502 Malmo, Sweden
[12] Cedars Sinai Med Ctr, Dept Med & Rheumatol, Beverly Hills, CA USA
[13] Columbia Univ, Toni Stabile Osteoporosis Ctr, Med Ctr, New York, NY 10032 USA