1. Department of Radiology; Yale New Haven Health Bridgeport Hospital; Bridgeport CT
2. Department of Radiology; Columbia University at Bassett Healthcare; Cooperstown NY
3. Department of Radiology; Columbia University Medical Center; New York NY
4. Division of Neurology; Department of Internal Medicine; Great Plains Health; North Platte NE
5. Department of Public Health and Preventive Medicine; State University of New York (SUNY) Upstate Medical University; Syracuse NY
6. Department of Radiology; State University of New York (SUNY) Upstate Medical University; Syracuse NY
7. Department of Radiology; University of Rochester; Rochester NY