1. Department of Orthopaedic Surgery, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea.
2. Department of Orthopaedic Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
3. Department of Orthopaedic Surgery, Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea.
4. Department of Orthopaedic Surgery, Daegu Fatima Hospital, Daegu, Korea.
5. Department of Orthopaedic Surgery, Gachon University Gil Hospital, Incheon, Korea.