1. Department of Family Medicine and Center for Health Promotion, Ilsan-Paik Hospital, Inje University, College of Medicine, Gyeonggi-Do, Republic of Korea
2. Division of Disease Prevention and Health Promotion, Korea National Health Insurance Corporation, Seoul, Republic of Korea
3. Department of Internal Medicine, Ilsan-Paik Hospital, Inje University, College of Medicine, Gyeonggi-Do, Republic of Korea