1. School of Medicine University of California San Francisco San Francisco California USA
2. Department of Surgery University of California San Diego San Diego California USA
3. Department of Surgery Duke University Durham North Carolina USA
4. Department of Surgery Massachusetts General Hospital Boston Massachusetts USA
5. Department of Surgery University of Wisconsin Madison Wisconsin USA
6. Department of Surgery University of Colorado Aurora Colorado USA
7. American College of Surgeons Chicago Illinois USA
8. Department of Surgery University of California San Francisco San Francisco California USA
9. Department of Surgery Montefiore Medical Center Bronx New York USA
10. Department of Surgery University of California Los Angeles Los Angeles California USA
11. The Healthcare Improvement Studies Institute (THIS Institute) University of Cambridge Cambridge UK