Pneumococcal polysaccharide vaccine effectiveness: study quality must not be ignored.
Trotter
Caroline
C
Scott
Pippa
P
Huss
Anke
A
Egger
Matthias
M
D000368:Aged; D006801:Humans; D015201:Meta-Analysis as Topic; D011008:Pneumococcal Infections / Q000517:prevention & control*; D022242:Pneumococcal Vaccines / Q000627:therapeutic use*; D016032:Randomized Controlled Trials as Topic / Q000592:standards; D018074:Vaccines, Conjugate / Q000627:therapeutic use*
C414006:23-valent pneumococcal capsular polysaccharide vaccine; D022242:Pneumococcal Vaccines; D018074:Vaccines, Conjugate