Expanded programme on immunization (EPI). Progress towards poliomyelitis eradication, 1990-1996.
D002681:China / Q000453:epidemiology; D003625:Data Collection; D006801:Humans; D017589:Immunization Programs / Q000639:trends; D015994:Incidence; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage*; D015397:Program Evaluation
D011055:Poliovirus Vaccine, Oral