1. Korea University College of Medicine, Seoul, Korea.
2. Division of Health Administration, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Korea.
3. Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea.
4. Department of Healthcare and Medicine for Unified Korea, Graduate School, Korea University, Seoul, Korea.
5. Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.