On the 'Circulation: Cardiovascular Quality and Outcomes' journal homepage, what is the main purpose or scope of this journal? Additionally, if I wanted to support or get involved with the American Heart Association, what are the direct opportunities presented on this page?
Navigate to circoutcomes.ahajournals.org. Locate the descriptive text that outlines the journal's primary focus or scope. Identify and list the prominent links or sections on the homepage that explicitly offer opportunities to support or get involved with the American Heart Association.
State that the journal's primary focus is: 'A catalyst for outstanding clinical and epidemiological science and policy information that enhances cardiovascular health and healthcare.' List 'Become a member', 'Volunteer', and 'Donate' as the direct opportunities for supporting or getting involved with the American Heart Association.