Name Info Provider Link
Pneumococcal Infections free resource MedlinePlus Health Information https://medlineplus.gov/pneumococcalinfections.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=20803226.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20803226/
subscription/membership/fee required Springer https://dx.doi.org/10.1007/s10096-010-1044-6
free resource Europe PubMed Central https://europepmc.org/abstract/MED/20803226