Affiliation: | 1. Department of Neurosurgery, Chang Gung Memorial Hospital, Keelung, Taiwan;2. Department of Neurosurgery, Chang Gung Memorial Hospital, Keelung, Taiwan School of Medicine, Chang Gung University, Taoyuan, Taiwan Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung, Taiwan;3. Department of Neurosurgery, Chang Gung Memorial Hospital, Linkou, Taiwan |