[1] Univ Sheffield, Ctr Metab Bone Dis, Sch Med, Beech Hill Rd, Sheffield S10 2RX, S Yorkshire, England
[2] Catholic Univ Australia, Inst Hlth & Ageing, Melbourne, Vic, Australia
[3] Univ Southampton, MRC Lifecourse Epidemiol Unit, Southampton, Hants, England
[4] Univ Oxford, NIHR Musculoskeletal Biomed Res Unit, Oxford, England
[5] Geneva Univ Hosp, Serv Bone Dis, Geneva, Switzerland
[6] Fac Med, Geneva, Switzerland
[7] Univ Southern Denmark, Inst Clin Res, Odense, Denmark
[8] King Saud Univ, Dept Biochem, Coll Sci, Prince Mutaib Chair Biomarkers Osteoporosis, Riyadh, Saudi Arabia
[9] Univ Florence, Dept Surg & Translat Med, Unit Bone & Mineral Dis, Florence, Italy
[10] Univ Oviedo, Hosp Univ Cent Asturias, Inst Reina Sofia Invest, Bone & Mineral Res Unit,REDinREN ISCIII, Asturias, Spain
[11] Lille Univ Hosp, Dept Rheumatol, Lille, France
[12] Med Univ Graz, Div Endocrinol & Diabetol, Dept Internal Med, Graz, Austria
[13] Krankenhaus NW Frankfurt, Dept Bone Oncol Endocrinol & Reprod Med, Frankfurt, Germany
[14] Endonet, Endocrine Clin & Lab, Basel, Switzerland
[15] Klinikum Frankfurt, Dept Orthopaed Surg & Osteol, Frankfurt, Germany
[16] Mayor Teaching Hosp, Charite Med Sch, Berlin, Germany
[17] Univ Sheffield, MRC & Arthrit Res UK Ctr Integrated Res Musculosk, Mellanby Ctr Bone Res, Sheffield, S Yorkshire, England
[18] Sapienza Univ Roma, Dept Internal Med & Med Disciplines, Rome, Italy
[19] Univ Lyon, CHU St Etienne, Dept Rheumatol, INSERM,U1059,Lab Biol Integree Tissu Osseux, St Etienne, France
[20] Univ Liege, Dept Publ Hlth Epidemiol & Hlth Econ, Liege, Belgium