Pediatric clinical trials: experiences of the Children's Oncology Group.
D002648:Child; D002986:Clinical Trials as Topic; D006801:Humans; D008495:Medical Oncology; D015337:Multicenter Studies as Topic; D009369:Neoplasms / Q000628:therapy; D024802:Nurse's Role; D015399:Nursing Research; D010372:Pediatrics; D012107:Research Design