[1] Univ Minnesota, Med Ctr, Dept Orthopaed Surg,Amer Acad Orthopaed Surg, Task Force Maintenance Certificat, Minneapolis, MN 55455 USA
[2] Univ Calif Los Angeles, David Geffen Sch Med, UCLA Orthopaed Hosp Dept Orthopaed Surg, Amer Board Orthpaed Surg, Los Angeles, CA 90007 USA
[3] Amer Acad Orthopaed Surg, Combined Task Force Maintenance Certificat, Los Angeles, CA 90007 USA