title: [Letter: Hepatitis A and B].
mesh_terms: D006506:Hepatitis A / Q000382:microbiology* / Q000517:prevention & control; D006509:Hepatitis B / Q000382:microbiology* / Q000517:prevention & control; D006511:Hepatitis B Antigens; D006801:Humans
chemical_list: D006511:Hepatitis B Antigens
vernacular_title: Hepatitis A und.