1. Department of Radiology, State University of New York Upstate Medical University, Syracuse, New York
2. Department of Radiology, Yale New Haven Health at Bridgeport Hospital, Bridgeport, Connecticut
3. Department of Anesthesia, New York Presbyterian Brooklyn Methodist Hospital, Brooklyn, New York
4. Department of Neurology, Great Plains Health, North Platte, Nebraska
5. Department of Radiology, Bassett Medical Center at Columbia University, Cooperstown, New York