1. Department of Orthopedic Surgery, Daegu Catholic University Hospital, College of Medicine, The Daegu Catholic University of Korea, Daegu, Korea.
2. Department of Orthopedic Surgery, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea.
3. Department of Orthopaedics, Cedars-Sinai Health System, Los Angeles, CA, USA.
4. Orthopedic Biomechanics Laboratory, Congress Medical Foundation, Pasadena, CA, USA.