1. Division of Cardiology; Severance Cardiovascular Hospital, Yonsei University College of Medicine; Seoul South Korea
2. Severance Biomedical Science Institute; Yonsei University College of Medicine; Seoul South Korea
3. Division of Cardiology; Myongji Hospital, Kwandong University College of Medicine; Goyang South Korea
4. Division of Cardiology; Yonsei University Wonju Christian Hospital; Wonju South Korea
5. Division of Cardiology; National Health Insurance Corporation Ilsan Hospital; Goyang South Korea
6. Division of Cardiology; Kangnam Sacred Heart Hospital; Seoul South Korea
7. Division of Cardiology; Gangnam Severance Hospital, Yonsei University College of Medicine; Seoul South Korea