1. Department of Emergency Medicine; University of Arizona College of Medicine- Phoenix; Maricopa Medical Center; Phoenix Arizona
2. Neurovascular Research Laboratory; Department of Radiology; Massachusetts General Hospital; Harvard Medical School; Charlestown Massachusetts
3. Department of Emergency Medicine; Massachusetts General Hospital; Harvard Medical School; Boston Massachusetts
4. Department of Pediatrics; Pediatric Critical Care Medicine; Massachusetts General Hospital; Harvard Medical School; Charlestown Massachusetts
5. Stroke Service and Neuroscience Intensive Care Unit; Department of Neurology; Massachusetts General Hospital; Harvard Medical School; Boston Massachusetts