1. Department of Public Health, Yonsei University Graduate School, Seoul, Korea.
2. Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Sociology, Yonsei University College of Social Sciences, Seoul, Korea.
4. Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea.
6. Department of Clinical Nursing Science, Yonsei University College of Nursing, Seoul, Korea.
7. Division of Silver Industry, Kangnam University, Yongin, Korea.
8. Cardiovascular and Metabolic Diseases Etiology Research Center, Yonsei University College of Medicine, Seoul, Korea.