1. Department of Neurology Department of Radiology Severance Hospital Yonsei University College of Medicine Seoul Korea
2. Clinical Research Center Asan Institute for Life Sciences Asan Medical Center University of Ulsan College of Medicine Seoul Korea
3. Department of Neurology Yongin Severance Hospital Yonsei University College of Medicine Seoul Korea
4. Department of Surgery Mokdong Hospital Ewha Womans University College of Medicine Seoul Korea
5. Department of Neurology Mokdong Hospital Ewha Womans University College of Medicine Seoul Korea
6. Department of Neurology Seoul Hospital Ewha Womans University College of Medicine Seoul Korea
7. Department of Oral and Maxillofacial Surgery, College of Medicine Ewha Womans University Seoul Korea