1. US Census Bureau, Population Division. Table 3. Projections of the population by sex and selected age groups for the United States: 2015 to 2060 (NP2014-T3) Release Date: December 2014
2. US Census Bureau, Population Division. Table 6. Percent distribution of the projected population by selected age groups for the United States: 2015 to 2060 (NP2014-T6). Release Date: December 2014
3. Arias E, Heron M, Xu JQ (2017) United States life tables, 2014. In: National vital statistics reports, vol 66, no 4. National Center for Health Statistics, Hyattsville
4. US Census Bureau, Population Division. Table 17. Projected life expectancy at birth by sex, race, and hispanic origin for the United States: 2015 to 2060 (NP2014-T17). Release Date: December 2014
5. American Cancer Society, Cancer Facts & Figures (2017) Age-adjusted cancer death rates, males by site. http://www.cancer.org/docroot/MED/content/MED_1_1_Most_Requested_Graphs_and_Figures_2008.asp