clinicaltrials.gov
heart.org
cdc.gov/heartdisease
nhlbi.nih.gov/health-topics/education-and-awareness/heart-truth
womenshealth.gov/heart-disease-and-stroke
everydayhealth.com/conditions/heart-health
cardiacscience.com/
heart-valve-surgery.com/heart-surgery-blog/
mayoclinic.org/diseases-conditions/heart-disease/symptoms-causes/syc-20353118
cardiosmart.org/
cdc.gov/dhdsp/pubs/docs/Best-Practices-Guide-508.pdf
stopafib.org/