1. Department of Orthopaedic Surgery, Musculoskeletal Research Center,
Children's Hospital of Pittsburgh, Department of Orthopaedic Surgery,
Musculoskeletal Research Center, Division of Sport Medicine, University of
Pittsburgh, Pittsburgh, Pennsylvania
2. Department of Orthopaedic Surgery, Musculoskeletal Research Center,
Division of Sport Medicine, University of Pittsburgh, Pittsburgh,
Pennsylvania
3. Department of Orthopaedic Surgery, Musculoskeletal Research Center,
Children's Hospital of Pittsburgh