Affiliation: | 1. Department of Cardiology, Ajou University School of Medicine, Suwon, Korea;2. Department of Cardiology, Yonsei University Wonju Christian Hospital, Wonju, Korea;3. Department of Cardiology, Kangwon National University Hospital, Chuncheon, Korea;4. Department of Cardiology, Pusan National University Hospital, Busan, Korea;5. Department of Cardiology, Hallym University Kandong Scared Heart Hospital, Seoul, Korea;6. Department of cardiology, Soonchunhyang University Seoul Hospital, Seoul, Korea;g Department of Cardiology, Korea University Guro Hospital, Seoul, Korea;h Department of Cardiology, Inje University Sanggye Paik Hospital, Goyang, Korea;i Department of Cardiology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea;j Department of Cardiology, Inha University Hospital, Incheon, Korea;k Department of Cardiology, Ulsan University GangNeung Asan Hospital, Gangneung, Korea;l Department of Cardiology, Chonnam National University Hospital, Gwangju, Korea |