1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, Sun Medical Center, Daejeon, Korea
3. Department of Family Medicine, Konyang University Hospital, Konyang University College of Medicine, Daejeon, Korea
4. Department of Family Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
5. Department of Family Practice and Community Health, Ajou University Medical Center, Suwon, Korea
6. Department of Psychiatry, Konyang University Hospital, Konyang University College of Medicine, Daejeon, Korea
7. Department of Family Medicine, Korea University College of Medicine, Seoul, Korea
8. Department of Family Medicine, Eulji Hospital, Eulji University School of Medicine, Seoul, Korea
9. Department of Pediatrics, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
10. Department of Surgery, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Korea
11. Division of Endocrinology and Metabolism, Department of Internal Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
12. Department of Pediatrics, National Medical Center, Seoul, Korea
13. Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
14. Central St' Mary's Clinic Internal Medicine, Seoul, Korea
15. Division of Endocrinology and Metabolism, Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
16. Department of Pediatrics, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
17. Department of Pediatrics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
18. Division of Endocrinology and Metabolism, Department of Internal Medicine, Sejong General Hospital, Bucheon, Korea