1. Department of Internal Medicine, Center for Thyroid Cancer, National Cancer Center, Goyang, Korea.
2. Department of Orthopaedic Surgery, Inje University College of Medicine, Seoul Paik Hospital, Seoul, Korea.
3. Department of Surgery, National Cancer Center, Goyang, Korea.
4. Department of Obstetrics and Gynecology, National Cancer Center, Goyang, Korea.
5. Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.