Name	Info	Provider	Link
Full text from the Univ. of Michigan Library	free resource	MLibrary (Deep Blue)	http://hdl.handle.net/2027.42/28886
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/0003-9969(90)90207-Q
Gum Disease	free resource	MedlinePlus Health Information	https://medlineplus.gov/gumdisease.html