title: Can gastrointestinal endoscopy transmit hepatitis B to patients?
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis; D005773:Gastroscopy / Q000009:adverse effects*; D006509:Hepatitis B / Q000276:immunology / Q000635:transmission*; D006511:Hepatitis B Antigens / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D000914:Antibodies, Viral; D006511:Hepatitis B Antigens