Name	Info	Provider	Link
	subscription/membership/fee required	Atypon	https://www.ajronline.org/doi/10.2214/AJR.04.1797
Atrial Fibrillation	free resource	MedlinePlus Health Information	https://medlineplus.gov/atrialfibrillation.html
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:16498089
CT Scans	free resource	MedlinePlus Consumer Health Information	https://medlineplus.gov/ctscans.html