1. Department of Pediatrics; Division of Pediatric Hematology; Oncology, University of Washington; Seattle Washington
2. Department of Pediatrics; Division of Hematology; Oncology, University of Texas; Southwestern Medical Center; Dallas TX
3. Department of Pediatrics; Division of Pediatric Cardiology; University of Texas; Southwestern Medical Center; Dallas TX
4. Department of Clinical Research; Childrens Medical Center; Dallas TX
5. Hematology/Oncology; Childrens Medical Center; Dallas TX
6. Department of Hematology-Oncology; Cook Children's Medical Center; Fort Worth TX