Leukemia and multiple myeloma in farmers.
D000328:Adult; D000367:Age Factors; D000382:Agricultural Workers' Diseases / Q000453:epidemiology*; D000818:Animals; D001353:Avian Leukosis / Q000453:epidemiology; D002645:Chickens; D006801:Humans; D007938:Leukemia / Q000453:epidemiology* / Q000209:etiology; D008223:Lymphoma / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000453:epidemiology* / Q000209:etiology; D009922:Oregon; D011201:Poultry Diseases / Q000453:epidemiology; D014861:Washington