[1] Univ Tennessee, Coll Med, Dept Orthopaed Surg, Chattanooga, TN USA
[2] Ohio State Univ, James Canc Hosp, Div Musculoskeletal Oncol, Wexner Med Ctr,Nationwide Childrens Hosp, Columbus, OH 43210 USA
[3] Ohio State Univ, Solove Res Inst, Wexner Med Ctr, Nationwide Childrens Hosp, Columbus, OH 43210 USA
[4] Univ Mississippi, Sch Med, Dept Orthopaed & Rehabil, University, MS 38677 USA