Name	Info	Provider	Link
	free resource	MDPI	https://www.mdpi.com/resolver?pii=s20041178
COPD	free resource	MedlinePlus Health Information	https://medlineplus.gov/copd.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/32093418/
Full Text at the institutional repository	free resource	Andalusian Health Repository	http://hdl.handle.net/10668/4266
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/32093418
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:32093418