1. Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
2. Department of Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea.
3. Department of Surgery, Seoul National University Hospital, Seoul, Korea.
4. Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.
5. Cancer Research Institute, Seoul National University, Seoul, Korea.
6. Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
7. Department of Internal Medicine, Nowon Eulji Medical Center, Seoul, Korea.
8. Division of Endocrinology and Metabolism, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea.
9. Department of Internal Medicine, Pusan National University School of Medicine, Yangsan, Korea.
10. Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.
11. Department of Internal Medicine, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Korea.
12. Department of Otolaryngology-Head and Neck Surgery, Center for Thyroid Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.