[1] Yonsei Univ, Coll Med, Div Cardiol, Seoul, South Korea
[2] Yonsei Univ, Coll Med, Dept Internal Med, Cardiovasc Res Inst,Severance Hosp, Seoul, South Korea
[3] Daedong Hosp, Dept Internal Med, Div Cardiol, Busan, South Korea
[4] Korea Univ, Coll Med, Div Cardiol, Cardiovasc Ctr,Guro Hosp, Seoul 136705, South Korea
[5] Kyung Hee Univ, Med Ctr, Dept Internal Med, Div Cardiol, Seoul, South Korea
[6] Chonnam Natl Univ Hosp, Heart Res Ctr, Dept Cardiol, Gwangju, South Korea
[7] Soon Chun Hyang Univ, Bucheon Hosp, Dept Cardiol, Bucheon, South Korea
[8] Gachon Univ, Gil Med Ctr, Dept Cardiol, Inchon, South Korea
[9] Dankook Univ, Coll Med, Div Cardiol, Cheonan, South Korea
[10] Hallym Univ, Sacred Heart Hosp, Dept Internal Med, Div Cardiol, Anyang, South Korea
[11] Yonsei Univ, Coll Med, Dept Internal Med, Div Cardiol,Gangnam Severance Hosp, Seoul, South Korea
[12] Konyang Univ Hosp, Dept Internal Med, Div Cardiol, Taejon, South Korea
[13] Ajou Univ, Dept Cardiol, Med Ctr, Suwon 441749, South Korea
[14] Pusan Natl Univ Hosp, Div Cardiol, Busan, South Korea
[15] Sungkyunkwan Univ, Dept Internal Med, Kangbuk Samsung Hosp, Div Cardiol,Dept Internal Med, Seoul, South Korea
[16] Gyeongsang Natl Univ Hosp, Dept Internal Med, Div Cardiol, Jinju, South Korea
[17] Gyeongsang Natl Univ, Sch Med, Jinju, South Korea
[18] Myongji Hosp, Cardiovasc Ctr, Dept Cardiol, Goyang, South Korea
[19] Yeungnam Univ Hosp, Dept Internal Med, Div Cardiol, Daegu, South Korea
[20] Seoul Natl Univ, SMG SNU Boramae Med Ctr, Dept Internal Med, Div Cardiol,Coll Med, Seoul, South Korea
[21] Univ Ulsan, Asan Med Ctr, Div Cardiol, Coll Med, Seoul, South Korea
[22] Ewha Womans Univ, Dept Internal Med, Mokdong Hosp, Div Cardiol, Seoul, South Korea
[23] Pusan Natl Univ, Yangsan Hosp, Dept Cardiol, Yangsan, South Korea
[24] Inje Univ, Ilsan Paik Hosp, Dept Internal Med, Div Cardiol, Goyang, South Korea
[25] Kosin Univ, Gospel Hosp, Dept Internal Med, Div Cardiol, Busan, South Korea
[26] LG Life Sci Ltd, Clin Dev Dept, Seoul, South Korea