Name	Info	Provider	Link
	subscription/membership/fee required	Atypon	https://www.acpjournals.org/doi/10.7326/M24-0613?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
COPD	free resource	MedlinePlus Health Information	https://medlineplus.gov/copd.html