ENDOSCOPY: GASTROINTESTINAL: GI: RECTUM: ADENOMA, VILLOUS POLYP; RECTUM, FU POST-Nd:YAG LASER; B1JT,FU SIGMOIDOSCOPY,8/31/90
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ENDOSCOPY: GASTROINTESTINAL: GI: RECTUM: ADENOMA, VILLOUS POLYP; RECTUM, FU POST-Nd:YAG LASER; B1JT,FU SIGMOIDOSCOPY,8/31/90