title: [2 cases of duodenal peptic ulcer in preschool children].
mesh_terms: D002675:Child, Preschool; D004381:Duodenal Ulcer / Q000150:complications / Q000473:pathology*; D006801:Humans; D008297:Male; D010438:Peptic Ulcer Hemorrhage / Q000473:pathology
vernacular_title: Dva sluchaia iazvennoĭ bolezni dvenadtsatiperstnoĭ kishki u deteĭ doshkol'nogo vozrasta.