1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea.
3. Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
4. Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
5. Division of Cardiology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
6. Department of Nutrition and Dietetics, Kangbuk Samsung Hospital, Seoul, Korea.
7. Department of Food Science and Nutrition, The Catholic University of Korea, Bucheon, Korea.
8. Department of Food Service and Nutrition Care, Seoul National University Hospital, Seoul, Korea.
9. Department of Endocrinology and Metabolism, Ajou University School of Medicine, Suwon, Korea.
10. Division of Cardiology, Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul, Korea.
11. Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea.
12. Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea.
13. Department of Neurology, Chung-Ang University College of Medicine, Seoul, Korea.
14. Department of Neurology, Hallym University Sacred Heart Hospital, Anyang, Korea.
15. Division of Nephrology, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea.
16. Division of Endocrinology and Metabolism, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea.
17. Department of Pediatrics, Wonkwang University Sanbon Medical Center, Gunpo, Korea.
18. Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
19. Department of Obstetrics and Gynecology, Korea University Medical Center, Seoul, Korea.
20. Division of Endocrinology and Metabolism, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea.