1. The Department of Emergency Medicine; the Knowledge and Evaluation Research Unit; the Division of Healthcare Policy Research; Department of Health Services Research, and the Robert D. and Patricia E. Kern Center for the Science of Healthcare Delivery; Mayo Clinic; Rochester MN
2. The Departments of Emergency Medicine and Population Health; New York University; New York NY
3. The Institute of Health and Society; Newcastle University; Newcastle upon Tyne UK
4. The Department of Emergency Medicine; Brigham and Women's Hospital; Boston MA
5. The Department of Emergency Medicine; Washington University School of Medicine; St. Louis MO