1. Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
2. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
3. Department of Medical Statistics, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea
4. Statistics and Actuarial Science, Soongsil University, Seoul, Republic of Korea
5. Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart and Chest Hospital, Liverpool, United Kingdom
6. Department of Clinical Medicine, Aalborg University, Aalborg, Denmark