[1] Dong A Univ Hosp, Dept Cardiol, Busan, South Korea
[2] Seoul Natl Univ, Seoul Natl Univ Hosp, Div Cardiol, Dept Internal Med,Coll Med, Seoul, South Korea
[3] Asan Med Ctr, Dept Internal Med, Div Cardiol, Seoul, South Korea
[4] Korea Univ, Div Cardiol, Dept Cardiovasc Ctr, Anam Hosp, Seoul, South Korea
[5] Korea Univ, Dept Internal Med, Ansan Hosp, Ansan, South Korea
[6] CHA Univ, Dept Cardiol, CHA Bundang Med Ctr, Seongnam, South Korea
[7] Kyung Hee Univ Hosp Gangdong, Div Cardiol, Dept Internal Med, Seoul, South Korea
[8] Pusan Natl Univ Hosp, Div Cardiol, Dept Internal Med, Busan, South Korea
[9] Ajou Univ, Dept Cardiol, Sch Med, Suwon, South Korea
[10] Gachon Univ, Gil Med Ctr, Div Cardiol, Incheon, South Korea
[11] Kyung Hee Univ Hosp, Dept Internal Med, Seoul, South Korea
[12] Dongguk Univ, Cardiovasc Ctr, Ilsan Hosp, Goyang, South Korea
[13] Chonnam Natl Univ Hosp, Dept Internal Med, Div Cardiol, Gwangju, South Korea
[14] Daegu Cathol Univ, Div Cardiol, Med Ctr, Daegu, South Korea
[15] Yonsei Univ, Wonju Coll Med, Wonju Severance Christian Hosp, Div Cardiol,Dept Internal Med, Wonju, South Korea
[16] Catholic Univ Korea, Yeouido St Marys Hosp, Dept Internal Med, Div Cardiol, Seoul, South Korea
[17] Chungnam Natl Univ, Coll Med, Chungnam Natl Univ Hosp, Dept Cardiol Internal Med, Daejeon, South Korea
[18] Catholic Univ Korea, Coll Med, Dept Internal Med, Seoul St Marys Hosp, Seoul, South Korea
[19] Korea Univ, Guro Hosp, Dept Internal Med, Seoul, South Korea
[20] Soonchunhyang Univ, Seoul Hosp, Dept Internal Med, Div Cardiol, Seoul, South Korea
[21] Hanyang Univ, Coll Med, Dept Internal Med, Seoul, South Korea
[22] Pusan Natl Univ Yangsan Hosp, Dept Internal Med, Div Cardiol, Yangsan, South Korea
[23] Sungkyunkwan Univ, Kangbuk Samsung Hosp, Dept Internal Med, Div Cardiol, Seoul, South Korea
[24] Gyeongsang Natl Univ, Coll Med, Dept Internal Med, Jinju, South Korea
[25] Ewha Womans Univ, Coll Med, Dept Cardiol, Seoul, South Korea
[26] Seoul Natl Univ, Bundang Hosp, Cardiovasc Ctr, Seongnam, South Korea
[27] Inje Univ, Coll Med, Busan Paik Hosp, Dept Internal Med, Busan, South Korea
[28] Keimyung Univ, Dongsan Med Ctr, Dept Internal Med, Div Cardiol, Daegu, South Korea
[29] Yuhan Corp, Yuhan Res Inst, Yongin, South Korea