Name	Info	Provider	Link
COPD	free resource	MedlinePlus Health Information	https://medlineplus.gov/copd.html
	free resource	Nature Publishing Group	https://doi.org/10.1038/s41598-017-16964-4
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/29203782/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/29203782
	free resource	scite Smart Citations	https://scite.ai/reports/29203782