1. Department of Internal Medicine Seoul National University Hospital Seoul South Korea
2. Department of Family Medicine, Center for Health Promotion and Optimal Aging Seoul National University College of Medicine and Hospital Seoul South Korea
3. Department of Family Medicine, Chuncheon Sacred Heart Hospital Hallym University College of Medicine Chuncheon South Korea
4. Division of Endocrinology and Metabolism, Department of Internal Medicine Korea University Guro Hospital Seoul South Korea
5. Department of Family Medicine Jeju National University School of Medicine Jeju South Korea
6. Department of Physical and Rehabilitation Medicine Chonnam National University Medical School Gwangju South Korea
7. Department of Psychiatry, College of Medicine Gyeongsang National University Jinju South Korea
8. Department of Biomedical Science and Technology, College of Medicine, East‐West Medical Research Institute Kyung Hee University Seoul South Korea
9. Elderly Frailty Research Center, Department of Family Medicine, College of Medicine Kyung Hee University Seoul South Korea
10. Department of Internal Medicine, Seoul National University Bundang Hospital Seoul National University College of Medicine Seongnam South Korea