1. Departments of Neurosurgery Henry Ford Health System; Detroit MI 48202
2. Department of Neurology, Warren Alpert Medical School; Brown University; Providence RI
3. Departments of Radiology, Neuroscience Institute; Henry Ford Health System; Detroit MI 48202
4. Division of Neuroradiology, NYU School of Medicine; NYU Langone Medical Center; New York NY 10016