1 Department of Neurosurgery, China Medical University Hospital, No. 2, Yude Rd., North Dist., Taichung 40447, Taiwan; China Medical University, No. 91, Xueshi Rd., North Dist., Taichung 40402, Taiwan.
2 China Medical University, No. 91, Xueshi Rd., North Dist., Taichung 40402, Taiwan; Department of Pathology, China Medical University Hospital, No. 2, Yude Rd., North Dist., Taichung 40447, Taiwan.
3 Department of Neurosurgery, China Medical University Hospital, No. 2, Yude Rd., North Dist., Taichung 40447, Taiwan; Graduate Institute of Immunology, China Medical University, No. 91, Xueshi Rd., North Dist., Taichung 40402, Taiwan.