Epidemiology of infectious hepatitis and problems of prevention and control.
D035843:Biomedical Research; D001699:Biometry; D006505:Hepatitis; D006506:Hepatitis A / Q000453:epidemiology* / Q000706:statistics & numerical data*; D014765:Viral Vaccines
D014765:Viral Vaccines
HEPATITIS, INFECTIOUS/epidemiology and statistics