AUTHOR=Rijkers Ger T. TITLE=Fixing a Hole: Preventing Pneumococcal Pneumonia by Vaccination JOURNAL=Frontiers in Immunology VOLUME=7 YEAR=2016 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2016.00349 DOI=10.3389/fimmu.2016.00349 ISSN=1664-3224