Pitfalls in case-control studies of vaccine effectiveness.
Moore
Matthew R
MR
O'Brien
Katherine
K
Nuorti
J Pekka
JP
Hennessy
Thomas
T
D015982:Bias; D016022:Case-Control Studies; D006801:Humans; D011008:Pneumococcal Infections / Q000453:epidemiology / Q000517:prevention & control*; D022242:Pneumococcal Vaccines; D012307:Risk Factors
D022242:Pneumococcal Vaccines