1. Department of Internal Medicine, Daejin Medical Center; Seongnam Korea
2. Department of Internal Medicine; Yonsei University College of Medicine; Seoul Korea
3. Department of Internal Medicine, Seoul National University Bundang Hospital; Seongnam Korea
4. Department of Internal Medicine, Inje University Ilsanpaik Hospital; Goyang Korea
5. Department of Internal Medicine, Chungbuk National University Hospital; Cheongju Korea
6. Department of Internal Medicine, Ulsan University Hospital; Ulsan Korea
7. Department of Internal Medicine, Korea University Ansan Hospital; Ansan Korea
8. Department of Internal Medicine, Korea University Guro Hospital; Seoul Korea
9. Department of Internal Medicine, The Catholic University of Korea, Bucheon St. Mary's Hospital; Bucheon Korea
10. Clinical Research Science; Handok Inc.; Seoul Korea
11. Clinical Research Operation; Handok Inc.; Seoul Korea
12. Division of Endocrinology and Metabolism, Department of Internal Medicine; Samsung Medical Center, Sungkyunkwan University; Seoul Korea