1. Departments of Emergency Medicine and Health Care Policy, Harvard Medical School, Boston, Massachusetts2Department of Emergency Medicine, Brigham and Women’s Hospital, Boston, Massachusetts3Ariadne Labs, Brigham and Women’s Hospital and Harvard School of
2. Department of Emergency Medicine, Brigham and Women’s Hospital, Boston, Massachusetts
3. Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts
4. Ariadne Labs, Brigham and Women’s Hospital and Harvard School of Public Health, Boston, Massachusetts5Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts6Department of Psychiatry, Brigham and Women’
5. Department of Economics, Harvard University, Cambridge, Massachusetts9National Bureau of Economic Research, Cambridge, Massachusetts