title: The dilemma of the HBsAg-positive physician. An approach to preventing transmission.
mesh_terms: D003428:Cross Infection / Q000517:prevention & control*; D006509:Hepatitis B / Q000635:transmission*; D006514:Hepatitis B Surface Antigens; D006801:Humans; D010820:Physicians
chemical_list: D006514:Hepatitis B Surface Antigens