[Perforation of gastroduodenal ulcers in middle-aged and elderly patients].
L A
LA
Murav'eva
E Iu
EIu
Volkov
D000367:Age Factors; D000368:Aged; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000175:diagnosis* / Q000601:surgery
Perforatsiia gastroduodenal'nykh iazv u lits pozhilogo i starcheskogo vozrasta.