1. Department of Neurology, Stroke Center, Seoul National University Bundang Hospital, College of Medicine, Seoul National University, Seoul, Republic of Korea
2. Department of Neurology, Pohang St. Mary's Hospital, Pohang, Republic of Korea
3. Department of Neurology, Youngdong Hospital, Chungcheongbuk‐do, Republic of Korea
4. Department of Neurology, Ulsan University College of Medicine, Ulsan, Republic of Korea
5. Department of Neurology, Ewha Womens University Medical Center, Seoul, Republic of Korea
6. Department of Neurology, Eulji University School of Medicine, Daejeon, Republic of Korea
7. Department of Radiology, Stroke Center, Seoul National University Bundang Hospital, College of Medicine, Seoul National University, Seoul, Republic of Korea
8. Department of Neurosurgery, Stroke Center, Seoul National University Bundang Hospital, College of Medicine, Seoul National University, Seoul, Republic of Korea