[1] Scripps Res Inst, Dept Mol & Expt Med, La Jolla, CA 92037 USA
[2] Univ Montreal Hosp Res Ctr CRCHUM, Osteoarthrit Res Unit, Montreal, PQ, Canada
[3] Nord Biosci AS, Herlev, Denmark
[4] Univ Florence, Dept Internal Med, Bone Metab Unit, Florence, Italy
[5] Univ Liege, Dept Publ Hlth Epidemiol & Hlth Econ, Liege, Belgium
[6] INSERM, UMR 1033, F-69008 Lyon, France
[7] Univ Lyon, Hop Edouard Herriot, Serv Rhumatol & Pathol Osseuse, Lyon, France
[8] Univ Liege, CHU, Bone & Cartilage Markers Lab, Dept Clin Chem, Liege, Belgium
[9] Univ Southampton, MRC Lifecourse Epidemiol Unit, Southampton, Hants, England
[10] Univ Oxford, NIHR Musculoskeletal Biomed Res Unit, Oxford, England
[11] Rottapharm Madaus Grp, Clin Res Unit, Monza, Italy
[12] Univ Sheffield, Sch Med, WHO Collaborating Ctr Metab Bone Dis, Sheffield, S Yorkshire, England
[13] Duke Univ, Sch Med, Dept Med, Div Rheumatol, Durham, NC 27706 USA
[14] Vrije Univ Amsterdam Med Ctr, Dept Rheumatol, Amsterdam, Netherlands
[15] Leiden Univ Med Ctr, Sect Mol Epidemiol, Leiden, Netherlands
[16] Fed Inst Drugs & Med Devices BfArM, Bonn, Germany
[17] Univ Hosp Geneva, Div Bone Dis, Geneva, Switzerland
[18] Fac Med, Geneva, Switzerland
[19] Washington Univ, Dept Cell Biol & Physiol, St Louis, MO USA
[20] Univ Med Ctr Utrecht, Dept Rheumatol & Clin Immunol, Utrecht, Netherlands
[21] Univ Liege, Bone & Cartilage Metab Res Unit, Liege, Belgium
[22] Univ Liege, Dept Publ Hlth Sci, CHU Ctr Ville, Policlin L Brull, Liege, Belgium