Name	Info	Provider	Link
	free resource	HighWire	http://erj.ersjournals.com/lookup/pmidlookup?view=long&pmid=30220648
COPD	free resource	MedlinePlus Health Information	https://medlineplus.gov/copd.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30220648/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/30220648
	free resource	scite Smart Citations	https://scite.ai/reports/30220648