Outreach is key to success of Pa. immunization program.
Zambarano
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D002648:Child; D002662:Child Health Services / Q000458:organization & administration*; D002675:Child, Preschool; D003151:Community Health Centers / Q000458:organization & administration; D003152:Community Health Nursing; D006801:Humans; D007114:Immunization; D007223:Infant; D010414:Pennsylvania