Name Info Provider Link
free resource BioMed Central https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-022-13193-x
Flu Shot free resource MedlinePlus Health Information https://medlineplus.gov/flushot.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/35468772/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/35468772