[Acute gastroduodenal ulcers and their complications].
D000208:Acute Disease; D000368:Aged; D004381:Duodenal Ulcer / Q000150:complications*; D006801:Humans; D008875:Middle Aged; D013276:Stomach Ulcer / Q000150:complications*
Ostrye gastroduodenal'nye iazvy i ikh oslozhneniia.