[1] Royal Cornwall Hosp, Bone & Joint Res Grp, Truro, England
[2] Duke Univ, Med Ctr, Med & Immunol, Durham, NC USA
[3] Durham Vet Adm Med Ctr, Med Res Serv, Durham, NC USA
[4] Hosp Special Surg, 535 E 70th St, New York, NY 10021 USA
[5] Univ Toronto, Div Orthopaed Surg, Toronto, ON, Canada
[6] Tottori Univ Hosp, Rehabil Div, Yonago, Tottori 6838503, Japan
[7] Tottori Univ, Sch Hlth Sci, Fac Med, Yonago, Tottori 6838503, Japan
[8] Flinders Univ S Australia, Rehabil Aged & Extended Care, Coll Med & Publ Hlth, Adelaide, SA, Australia
[9] Univ Sydney, Fac Med & Hlth, John Walsh Ctr Rehabil Res, Sydney, NSW, Australia
[10] Univ Florida, Div Rheumatol, Coll Med, Jacksonville, FL USA
[11] Lund Univ, Dept Clin Sci Malmo, Clin & Mol Osteoporosis Res Unit, Dept Geriatr,Skane Univ Hosp, Malmo, Sweden
[12] Lund Univ, Dept Clin Sci Malmo, Clin & Mol Osteoporosis Res Unit, Skane Univ Hosp,Dept Orthoped, Malmo, Sweden