[STUDIES ON FAMILIAL RESERVOIRS OF INFECTIOUS HEPATITIS].
D003141:Communicable Diseases; D004813:Epidemiology; D005190:Family; D006505:Hepatitis; D006506:Hepatitis A; D006801:Humans; D011044:Poland; D014765:Viral Vaccines
D014765:Viral Vaccines
EPIDEMIOLOGY; FAMILY; HEPATITIS, INFECTIOUS; POLAND