1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Uijeongbu St Mary's Hospital, College of Medicine The Catholic University of Korea Uijeongbu South Korea
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, Nowon Eulji Medical Center Eulji University Seoul South Korea
3. Division of Endocrinology and Metabolism, Department of Internal Medicine Bundang Jesaeng Hospital Seongnam South Korea
4. Division of Endocrinology and Metabolism, Department of Internal Medicine, Severance Hospital Yonsei University College of Medicine Seoul South Korea
5. Division of Endocrinology and Metabolism, Department of Internal Medicine Kyung Hee University Hospital Seoul South Korea
6. Division of Endocrinology and Metabolism, Department of Internal Medicine Kyung Hee University Hospital at Gangdong Seoul South Korea
7. Division of Endocrinology and Metabolism, Department of Internal Medicine Hallym University Dongtan Sacred Heart Hospital Hwaseong South Korea
8. Division of Endocrinology and Metabolism, Department of Internal Medicine, Bucheon St Mary's Hospital, College of Medicine The Catholic University of Korea Bucheon South Korea
9. Clinical Development Center Daewoong Pharmaceutical Co. Ltd Seoul South Korea
10. Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St Mary's Hospital, College of Medicine The Catholic University of Korea Seoul South Korea