1. Department of Orthopaedic Surgery, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
2. Daegu Park's Hospital, Daegu, Korea.
3. Department of Anatomy, School of Medicine, Kyungpook National University, Daegu, Korea.
4. Bio-Medical Research Institute, Kyungpook National University Hospital, Daegu, Korea.
5. Department of Orthopaedic Surgery, Keimyung University Dongsan Medical Center, Daegu, Korea.