%0 Journal Article
%T Efficacy of PPV23 in Preventing Pneumococcal Pneumonia in Adults at Increased Risk ¨C A Systematic Review and Meta-Analysis
%A Annika Witt
%A Christof von Eiff
%A Friedrich-Wilhelm Leverkus
%A Jana Hemmerling
%A Julia Schiffner-Rohe
%J Archive of "PLoS ONE".
%D 2016
%R 10.1371/journal.pone.0146338
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4711910/