1. Department of Cardiology and Neurology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.
2. Stroke & Neurological Disorders Center, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea.
3. Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul, Republic of Korea.
4. Department of Neurosurgery, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
5. Department of Epidemiology and Biostatistics, Graduate School of Public Health & Institute of Health and Environment, Seoul National University, Seoul, Republic of Korea.