| Affiliation: | 1. Department of Neurosurgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea;2. Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, South Korea;3. Department of Neurosurgery, Inha University School of Medicine and Hospital, Incheon, South Korea;4. Department of Neurosurgery, Ajou University School of Medicine and Hospital, Suwon, South Korea;5. Department of Neurosurgery, Seoul St. Mary's Hospital, , College of Medicine, The Catholic University of Korea, Seoul, South Korea |
