[1] Columbia Univ, Coll Phys & Surg, Dept Med, New York, NY USA
[2] New Mexico Clin Res & Osteoporosis Ctr, Div Metabol Bone Dis, Albuquerque, NM USA
[3] Univ Sheffield, Div Clin Med, Sheffield S10 2RX, England
[4] Monash Univ, Dept Med, Sch Clin Sci, Clayton, Vic 3168, Australia
[5] Univ Virginia, Div Endocrinol & Metab, Charlottesville, VA 22908 USA
[6] Aarhus Univ Hosp, Dept Radiol, DK-8200 Aarhus N, Denmark
[7] Aarhus Univ, Dept Clin Med, DK-8200 Aarhus N, Denmark
[8] Yonsei Univ, Severance Hosp, Endocrine Res Inst, Coll Med, Seoul 03722, South Korea
[9] Amer Univ Beirut, Calcium Metab & Osteoporosis Program, WHO Collaborating Ctr Metabol Bone Disorders, Beirut 1107, Lebanon
[10] Hebrew Sr Life, Marcus Inst Aging Res, Boston, MA 02131 USA
[11] Harvard Med Sch, Dept Med, Beth Israel Deaconess Med Ctr, Boston, MA 02115 USA
[12] HealthPartners Inst, Div Res & Evaluat, Bloomington, MN 55425 USA
[13] Univ Minnesota, Div Hlth Policy & Management, Minneapolis, MN 55455 USA
[14] Brazil Clin Res Ctr, BR-71625175 Brasilia, Brazil
[15] Univ Hlth Network, Dept Med, Toronto, ON M5G 2C4, Canada
[16] Univ Hlth Network, Joint Dept Med Imaging, Toronto, ON M5G 2C4, Canada
[17] Univ Toronto, Ctr Excellence Skeletal Hlth Assessment, Toronto, ON M5G 2C4, Canada
[18] Inst Hosp del Mar Med Invest, Dept Med, Barcelona, Spain
[19] Frankfurt Ctr Bone Hlth, Dept Obstetr & Gynecol, Frankfurt, Germany
[20] Phillipps Univ Marburg, Marburg, Germany
[21] Univ Tokyo, Dept Orthopaed Surg, Fac Med, Bunkyo ku, Tokyo 1130033, Japan
[22] Frankfurt Ctr Bone Hlth & Endocrinol, Dept Clin Osteol, D-60313 Frankfurt, Germany
[23] Chinese Acad Med Sci & Peking Union Med Coll, Dept Endocrinol, Peking Union Med Coll Hosp, Beijing 100730, Peoples R China
[24] Univ Calif San Francisco, CPMC Res Inst, San Francisco Coordinating Ctr, Dept Epidemiol & Biostat, San Francisco, CA 94158 USA