Expanded programme on immunization.
D002675:Child, Preschool; D002681:China; D003906:Developing Countries; D005380:Financing, Government; D006801:Humans; D007114:Immunization / Q000191:economics*; D007348:Insurance, Health / Q000191:economics; D011320:Primary Health Care / Q000191:economics; D014480:United Nations; D014944:World Health Organization