1. The Department of Emergency Medicine; Medical College of Wisconsin; Milwaukee WI
2. Anaesthesia and Intensive Care Medicine; Royal United Hospital; Bath UK
3. Pre-Hospital, Resuscitation and Emergency Care Research Unit; Faculty of Health Sciences; Curtin University; Perth Western Australia
4. The Departments of Biostatistics and Environmental and Occupational Health Sciences Clinical Trial Center; University of Washington; Seattle WA
5. The Department of Emergency Medicine; College of Medicine; University of Arizona; Phoenix Campus; Maricopa Medical Center; Phoenix AZ
6. The Bureau of EMS & Trauma System; Arizona Department of Health Services; Phoenix AZ
7. The Division of General Surgery; St. Michael's Hospital; Toronto Ontario Canada
8. The School of Public Health and Preventive Medicine; Monash University; Melbourne Australia
9. The Department of Emergency Medicine; University of Pennsylvania; Philadelphia PA
10. The Department of Anaesthesiology and Intensive Care Medicine; University Hospital, University of Cologne; Cologne Germany
11. The Department of Epidemiology and Preventive Medicine; Monash University; Melbourne Australia
12. The Clínica de la Esperanza; Universidad Maimónides; Buenos Aires Argentina
13. The School of Medicine Emergency Medicine Clinical Programs; John Hopkins University; Baltimore MD
14. The Division of Emergency Medicine; University of the Witwatersrand; Johannesburg South Africa
15. The Department of Cardiology; Academic Medical Center; University of Amsterdam; Amsterdam Netherlands
16. The Department of Emergency Medicine; National Taiwan University; Taipei Taiwan
17. The Department of Emergency Medicine; Seoul National University College of Medicine; Seoul Republic of Korea
18. The National Heart; Lung, and Blood Institute; National Institutes of Health; Bethesda MD
19. The Department of Emergency Medicine; Olive View-University of California; Los Angeles Medical Center; Sylmar CA
20. The Heart Institute; University of Sao Paulo Medical School; Sao Paulo Brazil
21. The Department of Emergency Medicine; Singapore General Hospital, and the Office of Clinical Sciences; Duke-NUS Graduate Medical School; Singapore