1. Division of General Pediatric Surgery, Johns Hopkins Children’s Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
2. Department of Pediatric Radiology, Children’s Mercy Hospital, University of Missouri–Kansas City School of Medicine, Kansas City
3. Department of Pediatric Radiology, Children’s Wisconsin, Medical College of Wisconsin, Milwaukee
4. Department of Pediatric Surgery, St Louis Children’s Hospital, Washington University School of Medicine in St Louis, St Louis, Missouri
5. Division of Pediatric Surgery, Norton Children’s Hospital, University of Louisville, Louisville, Kentucky
6. Division of Pediatric Surgery, Children’s Mercy Hospital, University of Missouri–Kansas City School of Medicine, Kansas City
7. Department of Pediatric Radiology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
8. Department of Pediatric Radiology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, Illinois
9. Department of Pediatric Radiology, St Louis Children’s Hospital, Washington University School of Medicine in St Louis, St Louis, St Louis, Missouri
10. Department of Pediatric Radiology, Nationwide Children’s Hospital, The Ohio State University College of Medicine, Columbus
11. Center for Surgery Outcomes Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
12. Center for Surgical Outcomes Research, Abigail Wexner Research Institute, Department of Surgery, Nationwide Children’s Hospital, The Ohio State University College of Medicine, Columbus
13. Section of Pediatric Surgery, C. S. Mott Children’s and Von Voigtlander Women’s Hospital, University of Michigan Medical School, Ann Arbor
14. Division of Pediatric Surgery, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
15. Division of Pediatric Surgery, Ann & Robert H. Lurie Children’s Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, Illinois
16. Division of Pediatric Surgery, Children’s Wisconsin, Medical College of Wisconsin, Milwaukee
17. Division of Pediatric Surgery, Riley Children’s Hospital, Indiana University School of Medicine, Indianapolis
18. Division of Pediatric Surgery, American Family Children’s Hospital, University of Wisconsin, Madison
19. Division of Pediatric Surgery, Comer Children’s Hospital, University of Chicago Medicine and Biological Sciences, Chicago, Illinois
20. for the Midwest Pediatric Surgery Consortium