title: [Incidence of nutritional deficiency anemia in urban and rural children 3 to 7-years old].
mesh_terms: D000367:Age Factors; D000747:Anemia, Hypochromic / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D011044:Poland; D012424:Rural Population; D014505:Urban Population
vernacular_title: Czĕstosc wyst epowania niedokrwistosci niedoborowej u dzieci miejskich i wiejskich w wieku od 3 do 7 lat.