title: Challenges in estimating efficacy against pneumococcal pneumonia in children.
authors.forename: Kimberly J
authors.initials: KJ
authors.lastname: Center
authors.forename: Peter R
authors.initials: PR
authors.lastname: Paradiso
mesh_terms: D006801:Humans; D022242:Pneumococcal Vaccines / Q000008:administration & dosage* / Q000276:immunology*; D011018:Pneumonia, Pneumococcal / Q000517:prevention & control*
chemical_list: D022242:Pneumococcal Vaccines