1. Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea;
2. Division of Biomedical Informatics Seoul National University College of Medicine, Seoul National University Biomedical Informatics (SNUBI), Seoul, Korea;
3. Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea;
4. Department of Genetic Epidemiology, Sogang University, Seoul, Korea;
5. Department of Biochemistry, Ewha Medical Research Institute, Seoul, Korea;
6. Department of Laboratory Medicine, Seoul National University Hospital, Seoul, Korea