[Gastroduodenal ulcerative hemorrhages in middle and old age].
D000368:Aged; D004381:Duodenal Ulcer / Q000150:complications*; D006801:Humans; D008875:Middle Aged; D010438:Peptic Ulcer Hemorrhage / Q000601:surgery*; D013276:Stomach Ulcer / Q000150:complications*
Iazvennye gastro-duodenal'nye krovotecheniia v pozhilom i starcheskom vozraste