title: Cancer incidence in relation to fluoride level in water supplies.
mesh_terms: D004739:England; D005457:Fluoridation; D006801:Humans; D009369:Neoplasms / Q000453:epidemiology* / Q000209:etiology; D009426:Netherlands; D009520:New Zealand; D012042:Registries; D014481:United States; D014852:Wales