title: [Emphasis on study of pediatric cancers].
authors.affiliation: lejianhe@sohu.com
authors.forename: Le-Jian
authors.initials: LJ
authors.lastname: He
mesh_terms: D000293:Adolescent; D002648:Child; D002662:Child Health Services / Q000639:trends*; D002675:Child, Preschool; D006801:Humans; D008495:Medical Oncology / Q000639:trends*; D009369:Neoplasms / Q000175:diagnosis*; D010372:Pediatrics / Q000592:standards*