1. Department of Neurosurgery, Neurological Institute Taipei Veterans General Hospital Taipei Taiwan
2. School of Medicine National Yang Ming Chiao Tung University Taipei Taiwan
3. School of Medicine National Defense Medical Center Taipei Taiwan
4. Department of Pathology and Laboratory Medicine Taipei Veterans General Hospital Taipei Taiwan
5. Department of Radiology Taipei Veterans General Hospital Taipei Taiwan
6. Department of Biomedical Engineering, School of Biomedical Science and Engineering National Yang Ming Chiao Tung University Taipei Taiwan