Risk factors for invasive pneumococcal disease in children: a population-based case-control study in North America.
Pelton
S I
SI
D016022:Case-Control Studies; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D011008:Pneumococcal Infections / Q000453:epidemiology*; D012307:Risk Factors; D014481:United States