1. Department of Pediatrics; Stanford University; Stanford California
2. Bristol-Myers Squibb; Princeton New Jersey
3. Department of Pathology and Laboratory Medicine; Children's Hospital of Philadelphia; Philadelphia Pennsylvania
4. Perelman School of Medicine; University of Pennsylvania; Philadelphia Pennsylvania
5. Pediatric Oncology Branch, National Cancer Institute; Bethesda Maryland
6. Department of Pediatric and Adolescent Medicine; Gustave Roussy Institute; Villejuif France
7. Department of Medical Biology and Pathology; Gustave Roussy Institute; Villejuif France
8. Vancouver Prostate Center; Vancouver British Columbia Canada
9. Department of Urologic Sciences; University of British Columbia; Vancouver British Columbia Canada
10. British Columbia Cancer Agency; Vancouver British Columbia Canada
11. Department of Pediatrics; University of Pennsylvania; Philadelphia Pennsylvania