1. Department of Medicine Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania
2. Center for Health Equity Research and Promotion (CHERP) Philadelphia VA Medical Center Philadelphia Pennsylvania
3. Children's Hospital of Philadelphia Philadelphia Pennsylvania
4. Division of Oncology Department of Pediatrics Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania
5. Center for Outcomes Research Children's Hospital of Philadelphia Philadelphia Pennsylvania
6. Division of Oncology, Department of Pediatrics University of Pennsylvania Philadelphia Pennsylvania
7. Department of Anesthesiology and Critical Care Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania
8. Department of Health Care Management Wharton School University of Pennsylvania Philadelphia Pennsylvania