1. Department of Emergency Medicine; University of Colorado School of Medicine; Aurora CO
2. Intermountain Institute for Healthcare Delivery Research; Salt Lake City UT
3. Emergency Department Benchmarking Alliance; Newark DE
4. Department of Emergency Medicine; George Washington University; Washington DC
5. Department of Emergency Medicine; Brigham and Women's Hospital and Harvard University; Boston MA
6. Department of Emergency Medicine; Northeast Ohio Medical University; Akron OH
7. HCA; Continental Division; Denver CO