[1] Yonsei Univ, Yongin Severance Hosp, Dept Neurol, Coll Med, Yongin, South Korea
[2] Yonsei Univ, Severance Cardiovasc Hosp, Div Cardiol, Coll Med, Seoul, South Korea
[3] Yonsei Univ, Dept Neurol, Coll Med, Seoul, South Korea
[4] Integrat Res Ctr Cerebrovasc & Cardiovasc Dis, Seoul, South Korea
[5] Yonsei Univ, Dept Res Affairs, Biostat Collaborat Unit, Coll Med, Seoul, South Korea