1. Department of Surgery, Division of Neurosurgery, The New York Hospital-Cornell University Medical College, New York, New York
2. Department of Surgery, The New York Hospital-Cornell University Medical College, New York, New York
3. Department of Radiology, Division of Neuroradiology, The New York Hospital-Cornell University Medical College, New York, New York
4. Department of Obstetrics and Gynecology, The New York Hospital-Cornell University Medical College, New York, New York