Name Info Provider Link
COPD free resource MedlinePlus Health Information https://medlineplus.gov/copd.html
free resource Public Library of Science https://dx.plos.org/10.1371/journal.pone.0042227
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22848747/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/22848747
CT Scans free resource MedlinePlus Consumer Health Information https://medlineplus.gov/ctscans.html