title: Type B hepatitis infection risk in flexible fibreoptic endoscopy.
mesh_terms: D000328:Adult; D000368:Aged; D004724:Endoscopy / Q000009:adverse effects*; D005260:Female; D005336:Fiber Optic Technology; D006509:Hepatitis B / Q000635:transmission*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012306:Risk