[Importance of gastroscopy in the diagnosis of stomach ulcerations].
D001706:Biopsy; D005773:Gastroscopy; D006801:Humans; D013270:Stomach / Q000473:pathology; D013276:Stomach Ulcer / Q000175:diagnosis* / Q000473:pathology
Zanchenie gastroskopii v diagnostike iz'iazvleniĭ zheludka