Affiliation: | 1. Neurosurgical Service, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan;2. Department of Diagnostic Radiology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan;3. Department of Pathology and Cell Biology and Anatomy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan |