1. From the Mattel Children's Hospital at UCLA, Los Angeles, California;
2. Emory University School of Medicine, Atlanta, Georgia;
3. University of Tennessee Health Science Center, Memphis, Tennessee;
4. Children's Hospital of Wisconsin, Milwaukee, Wisconsin;
5. Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio;
6. Texas Children's Hospital, Houston, Texas;
7. University of Texas Southwestern Medical Center, Dallas, Texas;
8. Mercy Hospital, St. Louis, Missouri