1. Department of Neurology University of Michigan Health System; Ann Arbor MI
2. Stroke Program; University of Michigan Health System; Ann Arbor MI
3. Department of Emergency Medicine; University of Michigan Health System; Ann Arbor MI
4. Department of Epidemiology; University of Michigan School of Public Health; Ann Arbor MI
5. Department of Internal Medicine; University of Michigan Health System; Ann Arbor MI
6. Department of Emergency Medicine; CHRISTUS Spohn Hospital-Memorial; Corpus Christi TX