1. Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital and Seoul National University College of Medicine, Seoul, Korea.
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea.
3. Division of Cardiology, Department of Internal Medicine, Korea University College of Medicine, Anam Hospital, Seoul, Korea.
4. Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
5. Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Korea.
6. Division of Endocrinology, Department of Internal Medicine, Yeungnam University Medical Center, Daegu, Korea.
7. Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.