title: Pneumococcal polysaccharide vaccines.
authors.forename: J M
authors.initials: JM
authors.lastname: Werre
authors.forename: L D
authors.initials: LD
authors.lastname: de Haan
mesh_terms: D000368:Aged; D006801:Humans; D017063:Outcome Assessment, Health Care; D011008:Pneumococcal Infections / Q000517:prevention & control; D022242:Pneumococcal Vaccines / Q000627:therapeutic use*; D011135:Polysaccharides, Bacterial / Q000627:therapeutic use*; D011787:Quality of Health Care; D013154:Spleen / Q000503:physiopathology*
chemical_list: D022242:Pneumococcal Vaccines; D011135:Polysaccharides, Bacterial