title: Declining childhood immunization rates becoming cause for concern.
authors.forename: J W
authors.initials: JW
authors.lastname: Zylke
mesh_terms: D002675:Child, Preschool; D003365:Costs and Cost Analysis; D006801:Humans; D007114:Immunization / Q000191:economics / Q000706:statistics & numerical data*; D007223:Infant; D014481:United States