1. New York Presbyterian Columbia University Irving Medical Center New York New York USA
2. Warren Alpert Medical School of Brown University Providence Rhode Island USA
3. Harvard Medical School Boston Massachusetts USA
4. University of California San Francisco School of Medicine San Francisco California USA
5. Brigham and Women's Hospital Department of General Surgery Boston Massachusetts USA
6. University of California Center for Climate, Health and Equity San Francisco California USA
7. Hospital of the University of Pennsylvania Philadelphia Pennsylvania USA
8. Department of Family and Community Medicine University of British Columbia Vancouver British Columbia Canada