[Acute ulcers of the gastrointestinal tract as complications of surgical intervention].
D000328:Adult; D000368:Aged; D005260:Female; D005767:Gastrointestinal Diseases / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D014456:Ulcer / Q000209:etiology*
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