Name	Info	Provider	Link
	subscription/membership/fee required	Atypon	https://www.atsjournals.org/doi/10.1165/rcmb.2011-0273OC?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23371060/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/23371060
	free resource	scite Smart Citations	https://scite.ai/reports/23371060