1Division of Cardiology, Department of Internal Medicine, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju,
Korea
2Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Korea University College of Medicine, Seoul,
Korea
3Division of Cardiology, Department of Internal Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung,
Korea
4Department of Cardiology, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon,
Korea
5Division of Cardiology, Department of Internal Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul,
Korea
6Division of Cardiology, Department of Internal Medicine, Ewha Womans University Mokdong Hospital, Ewha Womans University College of Medicine, Seoul,
Korea
7Division of Cardiology, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang,
Korea
8Division of Cardiology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam,
Korea
9Division of Cardiology, Department of Internal Medicine, National Health Insurance Service Ilsan Hospital, Goyang,
Korea
10Division of Cardiology, Department of Internal Medicine, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan,
Korea
11Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju,
Korea
12Division of Cardiology, Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong,
Korea
13Division of Cardiology, Department of Internal Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon,
Korea
14Division of Cardiology, Department of Internal Medicine, Myongji Hospital, Hanyang University Medical Center, Goyang,
Korea
15Division of Cardiology, Heart Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul,
Korea
16Division of Cardiology, Cardiovascular Center, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon,
Korea