1. Monroe Carrell Jr. Children's Hospital at Vanderbilt, Vanderbilt Ingram Cancer Center; Nashville Tennessee
2. University of Tennessee Health Science Center; Memphis Tennessee
3. Centre Hospitalier Universitaire Sainte-Justine; Montreal Quebec Canada
4. State University of New York Upstate Medical University; Syracuse New York
5. Johns Hopkins University; Baltimore Maryland
6. Duke University Medical Center; Durham North Carolina
7. St. Jude Children's Research Hospital; Memphis Tennessee
8. Centre Hospitalier de Verdun; Montreal Quebec Canada