1. Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul, Korea.
2. Department of Endocrinology and Metabolism, College of Medicine, The Catholic University of Korea, Seoul, Korea.
3. College of Pharmacy, Sookmyung Women's University, Seoul, Korea.
4. Seoul National University Biomedical Informatics (SNUBI) and Systems Biomedical Informatics Research Center, Division of Biomedical Informatics, Seoul National University College of Medicine, Seoul, Korea.