[1] Korea Univ, Coll Med, Cardiovasc Ctr, Dept Cardiol,Anam Hosp, Seoul, South Korea
[2] Sungkyunkwan Univ, Gangbuk Samsung Hosp, Dept Cardiol, Coll Med, Seoul, South Korea
[3] CHA Univ, Cardiac Ctr, CHA Bundang Med Ctr, Cardiol Div, Seongnam, South Korea
[4] Seoul Med Ctr, Dept Cardiol, Seoul, South Korea
[5] Kyung Hee Univ, Med Ctr, Dept Internal Med, Seoul, South Korea
[6] Hanyang Univ, Dept Internal Med, Div Cardiol, Coll Med, Seoul, South Korea
[7] Yonsei Univ, Severance Hosp, Dept Cardiol, Coll Med, Seoul, South Korea
[8] Korea Univ, Grad Sch, Coll Hlth Sci, Dept Hlth Policy & Management, Seoul, South Korea
[9] Korea Univ, Grad Sch, Dept Hlth Care Sci, Seoul, South Korea
[10] Dongguk Univ, Cardiovasc Ctr, Ilsan Hosp, Goyang Si, Gyeonggi, South Korea
[11] Dongguk Univ, Coll Med, Gyeongju Si, Gyeongbuk, South Korea