[Follow-up statistics on poliomyelitis vaccinations in the United States].
D035843:Biomedical Research; D005500:Follow-Up Studies; D006801:Humans; D011051:Poliomyelitis / Q000517:prevention & control*; D014481:United States; D014611:Vaccination
POLIOMYELITIS/prevention and control
Zur Erfolgsstatistik der Poliomyelitis-Schutzimpfungen in den Vereinigten Staaten.