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https://www.who.int/news-room/fact-sheets/detail/cardiovascular-diseases-(cvds)
. Accessed 1 Feb 2019
2. American Heart Association.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5408160/pdf/nihms852024.pdf
. Accessed 1 Feb 2019
3. National Heart, Lung, and Blood Institute.
https://www.nhlbi.nih.gov/health-topics/coronary-heart-disease
. Accessed 1 Feb 2019
4. Nucleus Medical Media.
http://www.nucleushealth.com/
. Accessed 1 Feb 2019
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