Duodenal mucosal fold tears produced by oblique viewing gastroscope (GIF-K).
D000368:Aged; D004386:Duodenum / Q000293:injuries*; D020699:Gastroscopes; D005773:Gastroscopy / Q000009:adverse effects*; D006801:Humans; D007413:Intestinal Mucosa / Q000293:injuries; D008297:Male