1. Division of Endocrinology, Diabetes, Metabolism, and Nutrition and Knowledge and Evaluation Research Unit in Endocrinology (KER_Endo), Mayo Clinic, Rochester, Minnesota.
2. Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea.
3. Department of Public Health, Graduate School, Korea University, Seoul, Korea.
4. College of Medicine and MedRIC & PSM, Chungbuk National University, Cheongju, Korea.