1. Gill J, Moore MJ. The State of aging & health in America. Atlanta: Centers for Disease Control and Prevention; 2013.
2. Ortman JM, Velkoff VA, Hogan H. US Census Bureau. An aging nation: the older population in the United States. Available at:
https://www.census.gov/prod/2014pubs/p25-1140.pdf
. Accessed 9 Oct 2017.
3. Buttorff C, Ruder T, Bauman M. Multiple chronic conditions in the United States. Santa Monica: RAND Corporation; 2017.
4. Office of Disease Prevention and Health Promotion [ODPHP], Healthy People 2020. Older adults 2016.
5. Allan C, Valkanova V, Ebmeier K. Depression in older people is underdiagnosed. Practitioner. 2014;258(1771):19–22 2-3.