Endoscopic experience in the diagnosis of gastric stump cancer.
D000368:Aged; D005743:Gastrectomy / Q000009:adverse effects; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000601:surgery; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000209:etiology; D013997:Time Factors