ENDOSCOPY: GASTROINTESTINAL: GI: DUODENUM: ULCER,PEPTIC;DUODENUM,BULB,GIANT,OBSTRUCTING; A2LS,GIANT DU,GASTRIC OUTLET OBSTRUCTION
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ENDOSCOPY: GASTROINTESTINAL: GI: DUODENUM: ULCER,PEPTIC;DUODENUM,BULB,GIANT,OBSTRUCTING; A2LS,GIANT DU,GASTRIC OUTLET OBSTRUCTION