Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1027-3719&volume=1&issue=1&spage=16&aulast=Heldal
Tuberculosis	free resource	MedlinePlus Health Information	https://medlineplus.gov/tuberculosis.html