[1] Stellenbosch Univ, Inst Sport & Exercise Med, Dept Surg, Div Orthopaed, Cape Town, South Africa
[2] IOC Res Ctr South Africa, Cape Town, South Africa
[3] MRC, Biostat Unit, Cape Town, South Africa
[4] Univ Western Cape, Stat & Populat Studies Dept, Cape Town, South Africa
[5] Univ Pretoria, Fac Hlth Sci, Sport Exercise Med & Lifestyle Inst, Pretoria, South Africa
[6] Harvard Med Sch, Dept Phys Med & Rehabil, Spaulding Rehabil Hosp, Boston, MA 02115 USA
[7] Harvard Med Sch, Womens Hosp, Boston, MA 02115 USA
[8] Univ Brighton, Ctr Sport & Exercise Sci & Med, Eastbourne, England
[9] Uppsala Univ, Dept Neurosci, Rehabil Med, Uppsala, Sweden
[10] Int Paralymp Comm, Med & Sci Dept, Bonn, Germany
[11] Univ Ottawa, Carleton Univ Sport Med Clin, Dept Family Med, Ottawa, ON, Canada
[12] Isala Klin, Dept Sports Med, Zwolle, Netherlands
[13] Yonsei Univ, Wonju Coll Med, Rehabil Med, Wonju, South Korea
[14] Yonsei Univ, Yonsei Inst Sports Sci & Exercise Med, Seoul, South Korea