1. Mather MJ, LA, Pollard, KM. Aging in the United States. Population Reference Bureau. Accessed Jan, 2021. https://www.prb.org/wp-content/uploads/2019/07/population-bulletin-2015-70-2-aging-us.pdf
2. Department of Veterans Affairs Office of Policy and Planning NCfVAaS. VetPop2018. Accessed Jan 6, 2021. https://www.va.gov/vetdata/veteran_population.asp
3. National Veteran Suicide Prevention Annual Report,2019
4. National Veterans Suicide Prevention Annual Report,2021
5. National Veteran Suicide Prevention Annual Report,2022