Polio eradication as 2000 approaches.
Hall
A J
AJ
D006801:Humans; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral; D011159:Population Surveillance; D014944:World Health Organization
D011055:Poliovirus Vaccine, Oral