1. Children's Mercy Hospital and Clinics, Kansas City, Missouri.
2. Arkansas Children's Hospital, Little Rock, Arkansas.
3. Children's Memorial Hospital, Chicago, Illinois.
4. Children's Hospital of Wisconsin, Milwaukee, Wisconsin.
5. Rocky Mountain Children's Hospital, Denver, Colorado.
6. Shands Children's Hospital, Gainsville, Florida.
7. University of Texas Medical School at Houston, Houston, Texas.