Principles and practice of pediatric oncology / editors, Philip A. Pizzo, MD, David and Susan Heckerman Professor of Pediatrics and of Microbiology and Immunology, former Dean of the Stanford University School of Medicine, Founding Director, Stanford Distinguished Careers Institute, Stanford University, Stanford, California, David G. Poplack, MD, Elise C. Young Professor of Pediatric Oncology, Head Hematology-Oncology Section, Department of Pediatrics, Baylor College of Medicine, Deputy Director, Texas Children's Cancer and Hematology Centers, Texas Children's Hospital, Houston, Texas ; associate editors: Peter C. Adamson, MD, Professor of Pediatrics & Pharmacology, Perelman School of Medicine of the University of Pennsylvania, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, Susan M. Blaney, MD, Professor, Hematology-Oncology Section, Department of Pediatrics, Baylor College of Medicine, Deputy Director, Texas Children's Cancer Center and Hematology Centers, Texas Children's Hospital, Houston, Texas, Lee J. Helman, MD, Scientific Director for Clinical Research, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland.