1. Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul, Korea.
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
3. Sookmyung Women's University College of Pharmacy, Seoul, Korea.
4. Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.