Name	Info	Provider	Link
	free resource	MDPI	https://www.mdpi.com/resolver?pii=ijerph18126191
Pneumonia	free resource	MedlinePlus Health Information	https://medlineplus.gov/pneumonia.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34201085/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34201085