1. Department of Orthopaedic Surgery, Korea University College of Medicine, Ansan Hospital, Gojan 1 Dong, Danwon-gu, Ansan-si, Gyeonggi-do, 425-707, Korea.
2. Department of Orthopaedic Surgery, Korea University College of Medicine, Guro Hospital, 97 Gurodong-gil, Guro-gu, Seoul, 152-703, Korea.
3. SOLCO Biomedical Institute, 34-36 Geumam, Seotan, Pyungtaek, Gyeonggi-do, 451-852, Korea.
4. Department of Orthopaedic Surgery, Kyungpook National University Hospital, 50, 2-Ga, Samdok, Chunggu, Daegu, 700-721, Korea.
5. Division of Pediatric, Orthopaedics, Yonsei University College of Medicine, Severance Children’s Hospital, 250 Seongsanno, Seodaemun-gu, Seoul, 120-752, Korea.