title: A statistical study on farm and village level on the possible relations between human leukaemia and bovine leukosis.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D006801:Humans; D007938:Leukemia / Q000453:epidemiology / Q000662:veterinary*; D008228:Lymphoma, Non-Hodgkin / Q000453:epidemiology / Q000662:veterinary; D013548:Sweden; D013997:Time Factors