title: Viral hepatitis B infection risk in flexible fiberoptic endoscopy.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004724:Endoscopy / Q000009:adverse effects*; D005260:Female; D005336:Fiber Optic Technology / Q000009:adverse effects*; D006509:Hepatitis B / Q000635:transmission*; D006801:Humans; D008297:Male; D008875:Middle Aged