1. Department of Preventive Medicine, Kangwon National University Hospital, Chuncheon 24289, Republic of Korea
2. Department of Elderly Clinical Counseling, Seoul Graduate School of Counseling Psychology, Seoul 03136, Republic of Korea
3. Department of Health Policy and Management, Kangwon National University School of Medicine, Chuncheon 24341, Republic of Korea
4. Department of Internal Medicine, Kangwon National University Hospital, Chuncheon 24289, Republic of Korea
5. Division of Public Health, Kangwon National University Hospital, Chuncheon 24289, Republic of Korea