title: Letter: Epidemiology of leukaemia.
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000635:transmission; D002415:Cats; D002648:Child; D006801:Humans; D007398:Interpersonal Relations; D007938:Leukemia / Q000517:prevention & control / Q000635:transmission* / Q000662:veterinary