title: Effectiveness of pneumococcal vaccine.
authors.forename: E
authors.initials: E
authors.lastname: Hak
authors.forename: G A
authors.initials: GA
authors.lastname: van Essen
authors.forename: D E
authors.initials: DE
authors.lastname: Grobbee
authors.forename: T J
authors.initials: TJ
authors.lastname: Verheij
mesh_terms: D000368:Aged; D001428:Bacterial Vaccines; D006801:Humans; D022242:Pneumococcal Vaccines; D011018:Pneumonia, Pneumococcal / Q000517:prevention & control*; D012307:Risk Factors; D013296:Streptococcus pneumoniae / Q000276:immunology
chemical_list: D001428:Bacterial Vaccines; D022242:Pneumococcal Vaccines