1. Center for Policy and Research in Emergency Medicine; Department of Emergency Medicine; Oregon Health & Science University; Portland OR
2. Intermountain Injury Control Research Center; University of Utah; Salt Lake City UT
3. Department of Emergency Medicine; University of California San Francisco; San Francisco General Hospital; San Francisco CA
4. Department of Surgery; University of Washington; Seattle WA
5. Department of Surgery; Stanford University; Palo Alto CA
6. Department of Emergency Medicine; Denver Health Medical Center; Denver CO
7. Department of Epidemiology; Colorado School of Public Health; University of Colorado School of Medicine; Aurora CO
8. Lake Oswego Fire Department; Lake Oswego OR
9. Department of Emergency Medicine; University of California at Davis; Sacramento CA