Answered By: Todd White Last Updated: Oct 18, 2018 Views: 8470
Authors can be either personal (you or me) or corporate (an organization).
If you are on an organization's website, in this case the American Heart Association, the organization is the author of the information presented (even if no author - or person - is being credited).
Your citation would then look something like this -
American Heart Association. (2014). Heart attack recovery FAQs. Retrieved from http://www.heart.org/HEARTORG/