[YAG laser endoscopy: apparatus and technics].
D000328:Adult; D000368:Aged; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000601:surgery; D020699:Gastroscopes; D005773:Gastroscopy / Q000379:methods*; D006801:Humans; D053685:Laser Therapy; D007834:Lasers / Q000379:methods; D008297:Male; D008875:Middle Aged; D011127:Polyps / Q000601:surgery; D013274:Stomach Neoplasms / Q000601:surgery; D013276:Stomach Ulcer / Q000601:surgery*