Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0090-4295(14)00139-3
Emphysema	free resource	MedlinePlus Health Information	https://medlineplus.gov/emphysema.html
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy?issn=&vol=83&issue=6&pgfirst=1280
	free resource	scite Smart Citations	https://scite.ai/reports/24726310