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. Departments of Ophthalmology and
4. Radiology, Taipei Veterans General Hospital, Taipei, Taiwan;
5. Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia; and
6. Department of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
7. Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan;