Name Info Provider Link
subscription/membership/fee required Atypon https://www.atsjournals.org/doi/10.1513/AnnalsATS.201810-669OC?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
COPD free resource MedlinePlus Health Information https://medlineplus.gov/copd.html
CT Scans free resource MedlinePlus Consumer Health Information https://medlineplus.gov/ctscans.html