1. Centers for Disease Control and Prevention.: Heart disease facts.
http://www.cdc.gov/heartdisease/facts.htm
(2017). Accessed 10 Dec 2018
2. Centers for Disease Control and Prevention.: Stroke.
http://www.cdc.gov/stroke/
(2018). Accessed 10 Dec 2018
3. American Cancer Society.: Cancer facts and figures.
https://www.cancer.org/content/dam/cancer-org/research/cancer-facts-and-statistics/annual-cancer-facts-and-figures/2018/cancer-facts-and-figures-2018.pdf
(2018). Accessed 10 Dec 2018
4. Social Security Administration.: Fast facts & figures about social security.
https://www.ssa.gov/policy/docs/chartbooks/fast_facts/2018/fast_facts18.html
(2018). Accessed 10 Dec 2018
5. National Cancer Institute.: Relative survival rates by year of diagnosis, csr 1975–2015.
https://seer.cancer.gov/csr/1975_2015/results_merged/topic_survival_by_year_dx.pdf
(2015). Accessed 7 Apr 2019