1. Department of Surgery, Division of Neurosurgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Taiwan
2. Department of Surgery, Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
3. Department of Medical Imaging, Kaohsiung Medical University, Kaohsiung, Taiwan
4. Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan