1. Division of Cardiology, Department of Internal Medicine, Bucheon Sejong Hospital, Bucheon, South Korea (H.L., D.S.L., J.P., C.K., J.J.)
2. Department of Biostatistics, College of Medicine, Korea University, Seoul, South Korea (J.L.)
3. Department of Neurology, Pyeongtaek St. Mary’s Hospital, Pyeongtaek, South Korea (D.L.)
4. Department of Neurology, Bucheon Sejong Hospital, Bucheon, South Korea (M.O.)
5. Division of Cardiology, Department of Internal Medicine, Incheon Sejong Hospital, Incheon, South Korea (R.K.C.)
6. Daegu, South Korea (Y.C.K.).