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