1. Department of Emergency Medicine; Advocate Christ Medical Center l; Boston; MA
2. Department of Emergency Medicine; Advocate Christ Medical Center; Oak Lawn; IL
3. Department of Emergency Medicine; Emory University; Atlanta; GA
4. Department of Medicine; University of Washington Medical Center; Seattle; WA
5. Department of Emergency Medicine; Duke University Medical Center; Durham; NC
6. Department of Emergency Medicine; Oregon Health and Science University; Portland; OR
7. Department of Emergency Medicine; Jesse Brown VA Medical Center; Chicago; IL