1. Division of Endocrinology and Metabolism, Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Republic of Korea.
2. Department of Medicine, Gyeongsang National University College of Medicine, Jinju, Republic of Korea.
3. Division of Endocrinology and Metabolism, Department of Medicine, Thyroid Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
4. Division of Endocrinology, Department of Medicine, Gyeongsang National University Changwon Hospital, Gyeongsang National University College of Medicine, Changwon, Republic of Korea.
5. College of Medicine, Gyeongsang National University, Institute of Health Sciences, Jinju, Republic of Korea.
6. Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Republic of Korea.