title: Letter: Laboratory-acquired hepatitis B.
mesh_terms: D006509:Hepatitis B / Q000209:etiology* / Q000517:prevention & control; D006511:Hepatitis B Antigens / Q000302:isolation & purification; D006801:Humans; D007757:Laboratory Infection / Q000209:etiology* / Q000517:prevention & control
chemical_list: D006511:Hepatitis B Antigens