1. Department of Endocrinology and MetabolismKyung Hee University School of Medicine Seoul Korea
2. Division of Endocrinology and Metabolism, Department of Internal MedicineKorea University College of Medicine Seoul Korea
3. Department of Internal MedicineHanyang University College of Medicine Guri Korea
4. Department of Internal MedicineInha University School of Medicine Incheon Korea
5. Department of Endocrinology and MetabolismAjou University School of Medicine Suwon Korea
6. Department of Endocrinology and MetabolismBucheon St. Mary's Hospital The Catholic University of Korea Bucheon Korea
7. Department of Internal MedicineJeju National University School of Medicine Jeju Korea
8. Department of Internal MedicineGachon University Gil Medical Center Incheon Korea