1. Departments of Neurosurgery, New York University Medical Center, New York, New York
2. Division of Pediatric Neurosurgery, New York University Medical Center, New York, New York
3. Departments of Ophthalmology (Neuro-Ophthalmology), New York University Medical Center, New York, New York
4. Departments of Environmental Medicine, New York University Medical Center, New York, New York
5. Departments of Pathology (Neuropathology), New York University Medical Center, New York, New York
6. Division of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania