1. Department of Biostatistics, Korea University College of Medicine, Seoul, Korea.
2. Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea.
3. Division of Cardiology, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea.
4. Department of Medical Informatics, Korea University College of Medicine, Seoul, Korea.
5. Korea University Research Institute for Medical Bigdata Science, College of Medicine, Korea University, Seoul, Korea.
6. Division of Cardiology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Korea.
7. Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea.