[1] Daegu Catholic Univ, Dept Cardiol, Med Ctr, Daegu, South Korea
[2] Gachon Univ, Dept Cardiol, Gil Med Ctr, Incheon, South Korea
[3] Kangdong Sacred Heart Hosp, Dept Cardiol, Seoul, South Korea
[4] Kyungpook Natl Univ Hosp, Dept Cardiol, Daegu, South Korea
[5] Korea Univ, Guro Hosp, Dept Cardiol, Seoul, South Korea
[6] Korea Univ, Anam Hosp, Dept Cardiol, Seoul, South Korea
[7] Dongguk Univ, Dept Cardiol, Ilsan Med Ctr, Goyang, South Korea
[8] Samsung Med Ctr, Dept Cardiol, Seoul, South Korea
[9] Soonchunhyang Univ, Seoul Hosp, Dept Cardiol, Seoul, South Korea
[10] Ajou Univ Hosp, Dept Cardiol, Suwon, South Korea
[11] Gangnam Severance Hosp, Dept Cardiol, Seoul, South Korea
[12] Inje Univ, Dept Cardiol, Busan Paik Hosp, Seoul, South Korea
[13] Inje Univ, Dept Cardiol, Ilsan Paik Hosp, Goyang, South Korea
[14] Inje Univ, Dept Cardiol, Haeundae Paik Hosp, Pusan, South Korea
[15] Jeonbuk Natl Univ Hosp, Dept Cardiol, Jeonju, South Korea
[16] Jeju Natl Univ Hosp, Dept Cardiol, Jeju, South Korea
[17] Chung Ang Univ Hosp, Dept Cardiol, Seoul, South Korea
[18] Catholic Univ Korea, Yeouido St Marys Hosp, Dept Cardiol, Seoul, South Korea
[19] Keimyung Univ, Dongsan Hosp, Dept Cardiol, Daegu, South Korea
[20] Dong A Univ Hosp, Dept Cardiol, Pusan, South Korea
[21] Yeungnam Univ, Dept Cardiol, Med Ctr, Daegu, South Korea
[22] Daegu Catholic Univ, Med Ctr, Dept Cardiol, 33 Duryugongwonro17 gil, Daegu 42472, South Korea