[1] Seoul Natl Univ Hosp, Dept Internal Med, Seoul, South Korea
[2] Seoul Natl Univ Hosp, Cardiovasc Ctr, Seoul, South Korea
[3] Catholic Kwandong Univ, Inst Biomed Convergence, Coll Med, Kangnung, South Korea
[4] Yonsei Univ, Coll Med, Severance Cardiovasc Hosp, Div Cardiol, Seoul, South Korea
[5] Yonsei Univ, Coll Med, Integrat Res Ctr Cerebrovasc & Cardiovasc Dis, Seoul, South Korea