1. Rocky Mountain Poison and Drug Center, Denver Health and Hospital Authority, Denver, CO, USA;
2. Division of Emergency Medicine, Duke University School of Medicine, Durham, NC, USA;
3. Department of Emergency Medicine, Brody School of Medicine, Greenville, NC, USA;
4. Division of Emergency Medicine, Washington University School of Medicine, St. Louis, MO, USA;
5. Department of Emergency Medicine, Baylor College of Medicine, Houston, TX, USA;
6. Department of Surgery, Brody School of Medicine, Greenville, NC, USA;
7. Department of Emergency Medicine, University of North Carolina, Chapel Hill, NC, USA;
8. Department of Emergency Medicine, Virginia Commonwealth University, Richmond, VA, USA;
9. Department of Emergency Medicine and Hospital Services, Medical College of Georgia, Augusta, GA, USA;
10. Department of Emergency Medicine, University of Virginia, Charlottesville, VA, USA;
11. Texas A&M Health Science Center, College Station, TX, USA;
12. Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA;
13. Department of Emergency Medicine and Rocky Mountain Poison and Drug Center, Denver Health and Hospital Authority, Denver, CO, USA