Affiliation: | 1. Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea;2. Department of Orthopaedic Surgery, Orthopaedic Biomechanics Research Center, Rady Children''s Hospital, San Diego, California, U.S.A.;3. Department of Orthopaedic Surgery, University of California, San Diego Medical Center, San Diego, California, U.S.A. |