Providers boost immunization efforts.
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D002140:California; D002675:Child, Preschool; D003159:Community-Institutional Relations; D006265:Health Care Coalitions; D006754:Hospital Restructuring; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration*; D007223:Infant; D017057:Medically Uninsured; D009820:Ohio; D013781:Texas