Sungkyunkwan University - Heart Vascular and Stroke Institute, Sungkyunkwan University - Heart Vascular and Stroke Institute, Sungkyunkwan University - Heart Vascular and Stroke Institute, Sungkyunkwan University - Heart Vascular and Stroke Institute, Sungkyunkwan University - Kangbuk Samsung Hospital, Sungkyunkwan University - Kangbuk Samsung Hospital, Chungbuk National University - College of Medicine, Chungbuk National University - College of Medicine, Wonkwang University - Wonkwang University Hospital, Wonkwang University - Wonkwang University Hospital, Catholic University of Korea, Catholic University of Korea, Keimyung University Dongsan Medical Center - Keimyung University Dongsan Hospital, Sungkyunkwan University - Samsung Changwon Hospital, Chung-Ang University - Chung-Ang University Hospital, Chungnam National University - Chungnam National University Hospital, Chungnam National University - Chungnam National University Hospital, Inje University - Ilsan Paik Hospital, Hallym University - Hallym University Sacred Heart Hospital, Seoul National University - Division of Cardiology, Gyeongsang National University - Gyeongsang National University Hospital, Gyeongsang National University - Gyeongsang National University Hospital, Catholic University of Korea - Incheon St Mary's Hospital, Hanyang University - Hanyang University Seoul Hospital, Hanyang University - Myongji Hospital, Kyung Hee University - Kyung Hee University Hospital at Gangdong, Ewha Womans University - Seoul Hospital, Pusan National University - Yangsan Hospital, Sungkyunkwan University - Heart Vascular and Stroke Institute, Sungkyunkwan University - Heart Vascular and Stroke Institute, Sungkyunkwan University - Heart Vascular and Stroke Institute, Sungkyunkwan University - Heart Vascular and Stroke Institute, Sungkyunkwan University - Heart Vascular and Stroke Institute, Keimyung University Dongsan Medical Center - Keimyung University Dongsan Hospital and Independent