[The incidence of intestinal worms in students of elementary schools in Gdansk].
D006373:Helminthiasis / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D007410:Intestinal Diseases; D007411:Intestinal Diseases, Parasitic; D012574:Schools; D013334:Students
HELMINTHIASIS/epidemiology