1. Department of Neurosurgery, Chang Gung Memorial Hospital, Kaohsiung Medical Centre, Kaohsiung, Taiwan and Graduate Institute of Clinical Medicine, Chang Gung University, Kaohsiung, Taiwan
2. Department of Anesthesiology, Chang Gung Memorial Hospital, Kaohsiung Medical Centre, Kaohsiung, Taiwan
3. Department of Neurosurgery, Chang Gung Memorial Hospital, Kaohsiung Medical Centre, Kaohsiung, Taiwan and Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
4. Graduate Institute of Clinical Medicine, Chang Gung University, Kaohsiung, Taiwan
5. Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
6. Department of Neurology, Chang Gung Memorial Hospital, Kaohsiung Medical Centre, Kaohsiung, Taiwan and Graduate Institute of Clinical Medicine, Chang Gung University, Kaohsiung, Taiwan
7. Department of Pathology, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Kaohsiung, Taiwan
8. Department of Neurosurgery, Chang Gung Memorial Hospital, Kaohsiung Medical Centre, Kaohsiung, Taiwan and Graduate Institute of Clinical Medicine, Chang Gung University, Kaohsiung, Taiwan and Graduate Institute of Clinical Medicine, Chang Gung University, Kaohsiung, Taiwan