American Society of Pediatric Hematology/Oncology: Professional group that studies and treats childhood cancer and blood diseases.Association of Pediatric Oncology Social Workers: Committed to enhancing the emotional and physical well-being of children with cancer and their families.Mayo Clinic: Division of Pediatric Hematology and Oncology: Overview of the clinic, patient stories, diseases, treatment, services, and contact information. [Rochester, Minn]NCI-CCR: Pediatric Oncology Branch: Provides patients, families and physicians with an overview of the type of treatments available for children with cancer and current research being conducted. [Bethesda, Maryland]Oxford Journals: Principles and Practice of Pediatric Oncology: Discussion of the collaborative approach to reduce childhood cancer and improve the quality of life of children during and after treatment.Penn State Children's Hospital: Pediatric Hematology/Oncology: Uses the team approach to treat children with cancer and blood disorders. Includes staff, services, stem cell information, and resources. [PA]University of Rochester Medical Center: Pediatric Hematology/Oncology: Description of the group's activities, professional biographies of the health-care providers, and links to information on clinical services and the fellowship program.[New York]