Evaluation of vaccination against poliomyelitis in Czechoslovakia in 1957; the effect of vaccination on the clinical course of the paralytic form of poliomyelitis.
D035843:Biomedical Research; D003604:Czechoslovakia; D006801:Humans; D011051:Poliomyelitis / Q000517:prevention & control*; D014611:Vaccination
POLIOMYELITIS/prevention and control