Name	Info	Provider	Link
	free resource	BioMed Central	https://respiratory-research.biomedcentral.com/articles/10.1186/1465-9921-14-10
COPD	free resource	MedlinePlus Health Information	https://medlineplus.gov/copd.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23356508/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/23356508
Cited by Patents in	free resource	The Lens - Patent Citations Database	https://www.lens.org/lens/search/patent/list?q=reference_cited.nlp.ids.pmid:23356508
	free resource	scite Smart Citations	https://scite.ai/reports/23356508