Name Info Provider Link
subscription/membership/fee required Ingenta plc https://www.ingentaconnect.com/openurl?genre=article&issn=0883-5993&volume=37&issue=3&spage=162&aulast=Irvin
Pneumonia free resource MedlinePlus Health Information https://medlineplus.gov/pneumonia.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=34561377.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34561377/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/34561377
subscription/membership/fee required Wolters Kluwer https://doi.org/10.1097/RTI.0000000000000622