Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/0925-4439(92)90010-K
Pneumonia	free resource	MedlinePlus Health Information	https://medlineplus.gov/pneumonia.html
Full text from	free resource	CORE	https://core.ac.uk/reader/43318291?utm_source=linkout