1. Department of Family Medicine, Seoul Paik Hospital, College of Medicine, Inje University, Seoul, Korea.
2. Institute for Clinical Nutrition, Inje University, Seoul, Korea.
3. Department of Preventive Medicine, School of Medicine, Institute of Health Sciences, Gyeongsang National University, Jinju, Korea.
4. Department of Family Medicine, College of Medicine, Eulji University, Daejeon, Korea.