title: The clinical value of endoscopic biopsy of duodenal ulcer.
authors.forename: Z
authors.initials: Z
authors.lastname: Maratka
mesh_terms: D001706:Biopsy / Q000379:methods; D004381:Duodenal Ulcer / Q000473:pathology*; D004384:Duodenoscopy / Q000379:methods*; D006801:Humans; D011237:Predictive Value of Tests