title: Immunization 1967-2006: implementation keeping pace with invention?
authors.affiliation: Merck Vaccine Division, WP97-A261, 770 Sumneytown Pike, West Point, PA 19486-0004, USA. john_grabenstein@merck.com
authors.forename: John D
authors.initials: JD
authors.lastname: Grabenstein
mesh_terms: D000367:Age Factors; D006801:Humans; D007114:Immunization / Q000379:methods / Q000639:trends*; D007115:Immunization Schedule; D013678:Technology, Pharmaceutical / Q000379:methods / Q000639:trends*