1. Department of Emergency Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
2. Harvard University, Cambridge, Massachusetts
3. Division of General Internal Medicine and Primary Care, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
4. Center for Outcomes Research and Evaluation, Yale University School of Medicine, New Haven, Connecticut
5. Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, Massachusetts