[1] SW Orthoped Grp, Houston, TX USA
[2] Univ Mississippi, Med Ctr, Dept Med, Div Rheumatol & Mol Immunol, Jackson, MS 39216 USA
[3] Univ Mississippi, Med Ctr, Dept Orthoped Surg & Rehabil, Jackson, MS 39216 USA
[4] Sunnybrook Hlth Sci Ctr, Toronto, ON M4N 3M5, Canada
[5] New England Baptist Hosp, Boston, MA USA
[6] Bone & Joint Clin Houston, Houston, TX USA
[7] Seattle Childrens Hosp, Dept Orthoped & Sports Med, Seattle, WA USA
[8] Amer Acad Orthopaed Surg, Dept Res & Sci Affairs, Rosemont, IL USA