1. Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea.
2. Neuroscience Research Institute, Seoul National University Medical Research Center, Seoul, Korea.
3. Clinical Research Institute, Seoul National University Hospital, Seoul, Korea.
4. Department of Brain and Cognitive Sciences, Seoul National University College of Natural Sciences, Seoul, Korea.
5. Department of Neurosurgery, Ilsan Paik Hospital, College of Medicine, Inje University, Goyang, Korea.
6. Department of Radiation Oncology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea.
7. Department of Nursing, College of Medicine, Chosun University, Gwangju, Korea.
8. National Evidence-based Healthcare Collaborating Agency, Seoul, Korea.