1. Department of Orthopaedic Surgery, Inje University College of Medicine, Seoul Paik Hospital, Seoul, Korea.
2. Department of Internal Medicine, Center for Thyroid Cancer, National Cancer Center, Goyang, Korea.
3. Division of Gastroenterology, Department of Internal Medicine, Center for Cancer Prevention and Detection, National Cancer Center, Goyang, Korea.
4. Department of Urology, Urological Cancer Center, National Cancer Center, Goyang, Korea.
5. Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.