1. Department of Emergency Medicine, University of Michigan, Ann Arbor
2. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor
3. Department of Health Services Research, Baylor College of Medicine, Houston, Texas
4. Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
5. Department of Emergency Medicine, Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota
6. Department of Surgery, University of Michigan, Ann Arbor