1. Harvard Medical School, 25 Shattuck Street, Boston, MA 02116, USA
2. Harvard Business School, Wyss House, Soldiers Field Road, Boston, MA 02163, USA
3. Department of Emergency Medicine, University of California, 521 Parnassus Avenue, San Francisco, CA 94143, USA
4. Department of Emergency Medicine, Zuckerberg San Francisco General Hospital and Trauma Center, 1001 Potrero Avenue, San Francisco, CA 94110, USA
5. Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA