1. Department of Surgery Indiana University School of Medicine Indianapolis Indiana USA
2. Regenstrief Institute Indianapolis Indiana USA
3. Indiana UniversityRichard M. Fairbanks School of Public Health Indianapolis Indiana USA
4. Department of Surgery University of Wisconsin Madison Wisconsin USA
5. Pediatric and Adolescent Comparative Effectiveness Research Department of Pediatrics Indiana University School of Medicine Indianapolis Indiana USA
6. Department of Emergency Medicine Oregon Health & Science University School of Medicine Portland Oregon USA
7. Department of Surgery University of Minnesota School of Medicine Minneapolis Minnesota USA
8. Department of Surgery North Memorial Health Hospital Robbinsdale Minnesota USA
9. Institute for Health Informatics University of Minnesota Minneapolis Minnesota USA
10. Department of Surgery University of Michigan School of Medicine Ann Arbor Michigan USA