1 Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
2 Department of Neurosurgery, Kaohsiung Medical University Hospital, No.100, Tzyou, 1st Road, Kaohsiung, Taiwan, Republic of China.
3 Department of Surgery, Kaohsiung Municipal Ta Tung Hospital, Kaohsiung, Taiwan.
4 Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. cjc4b@pchome.com.tw.
5 Department of Neurosurgery, Kaohsiung Medical University Hospital, No.100, Tzyou, 1st Road, Kaohsiung, Taiwan, Republic of China. cjc4b@pchome.com.tw.