1. Center for Thyroid Cancer, National Cancer Center, Goyang, Korea.
2. Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Internal Medicine, Pusan National University Hospital, Biomedical Research Institute, Pusan National University School of Medicine, Busan, Korea.
4. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
5. Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea.
6. Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
7. Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
8. Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea.
9. Department of Nuclear Medicine, School Medicine, Kyungpook National University, Daegu, Korea.
10. Department of Medicine, Thyroid Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
11. Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea.