Current trends in gastroscopy.
D002277:Carcinoma / Q000175:diagnosis*; D004415:Dyspepsia / Q000209:etiology; D005336:Fiber Optic Technology; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D005773:Gastroscopy; D006801:Humans; D008722:Methods; D011230:Precancerous Conditions / Q000175:diagnosis; D013272:Stomach Diseases / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis*