title: Hereditary theory of childhood oncogenesis.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002170:Canada; D002648:Child; D002675:Child, Preschool; D004777:Environment; D005060:Europe; D005796:Genes; D006801:Humans; D007938:Leukemia / Q000235:genetics; D009369:Neoplasms / Q000453:epidemiology / Q000235:genetics*; D009520:New Zealand; D006113:United Kingdom