title: Epidemiologic association between endemic nephropathy and urinary system tumors in an endemic region.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002031:Bulgaria; D002648:Child; D005260:Female; D006801:Humans; D007674:Kidney Diseases / Q000150:complications / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D014565:Urogenital Neoplasms / Q000453:epidemiology* / Q000209:etiology