A case study in the administration of the expanded programme of immunization in Nigeria.
D002662:Child Health Services / Q000458:organization & administration*; D002675:Child, Preschool; D006801:Humans; D007114:Immunization; D009549:Nigeria; D011314:Preventive Health Services / Q000458:organization & administration*; D011320:Primary Health Care / Q000458:organization & administration