1. Department of Surgery
2. Hasbro Children's Hospital, Brown Medical School, Providence, Rhode Island
3. St Vincent's Mercy Children's Hospital, Toledo, Ohio
4. Strong Memorial Hospital, University of Rochester, Rochester, New York
5. School of Public Health, University of Michigan, Ann Arbor, Michigan
6. Baylor College of Medicine, Houston, Texas
7. Johns Hopkins University School of Medicine, Baltimore, Maryland
8. Columbus Children's Hospital, Columbus, Ohio
9. Department of Radiology, C.S. Mott Children's Hospital