1. Department of Neurosurgery, Chungnam National University Hospital, Daejeon, Korea.
2. Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
3. Department of Neurosurgery, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul, Korea.
4. Department of Critical Care Medicine, Seoul National University Hospital, Seoul, Korea.
5. Division of Neurotrauma & Neurocritical Care Medicine, Department of Neurosurgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.