title: Carcinogenic risks of some biological agents.
authors.forename: E
authors.initials: E
authors.lastname: Attah
mesh_terms: D000349:Africa / Q000453:epidemiology; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology* / Q000469:parasitology; D002295:Carcinoma, Transitional Cell / Q000453:epidemiology* / Q000469:parasitology; D006801:Humans; D015994:Incidence; D012307:Risk Factors; D012553:Schistosomiasis haematobia / Q000453:epidemiology*; D001749:Urinary Bladder Neoplasms / Q000453:epidemiology* / Q000469:parasitology