Name	Info	Provider	Link
Collapsed Lung	free resource	MedlinePlus Health Information	https://medlineplus.gov/collapsedlung.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31115153/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31115153
	free resource	Wiley	https://onlinelibrary.wiley.com/doi/10.1111/1759-7714.13091