1. Department of Neurology, Washington University in St. Louis, St. Louis, Missouri.
2. Department of Radiology, University of California, San Diego, San Diego, California.
3. Brain Trauma Foundation, New York, New York.
4. Mallinckrodt Institute of Radiology, St. Louis, Missouri.
5. Department of Neurological Surgery, Weill Cornell Medical College, New York, New York.