1. Institute for Healthcare Policy and Innovation VA Ann Arbor/University of Michigan Ann Arbor Michigan USA
2. Department of Emergency Medicine Yale School of Medicine New Haven Connecticut USA
3. Department of Pediatrics NewYork‐Presbyterian/Columbia University Irving Medical Center New York New York USA
4. American College of Emergency Physicians Dallas Texas USA
5. Departments of Emergency Medicine and Pediatrics Yale University School of Medicine New Haven Connecticut USA
6. Center for Outcomes Research and Evaluation Yale School of Medicine New Haven Connecticut USA