title: Regarding "Improving immunization surveillance and performance monitoring".
authors.forename: D M
authors.initials: DM
authors.lastname: Simpson
mesh_terms: D002648:Child; D019538:Health Care Surveys; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration* / Q000706:statistics & numerical data*; D011159:Population Surveillance; D012042:Registries; D014481:United States