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