1. The U.S. population is growing older, and the gender gap in life expectancy is narrowing: population reference bureau;MaK,2020
2. WHO demographic trends, statistics and data on ageing: WHO Regional Office for Europe; n.d. Available from: https://www.euro.who.int/en/health-topics/Life-stages/healthy-ageing/data-and-statistics/demographic-trends,-statistics-and-data-on-ageing.
3. Geriatric syndromes: clinical, research, and policy implications of a core geriatric concept;Inouye;J Am Geriatr Soc,2007
4. Focus on disability-free life expectancy: implications for health-related quality of life;Galvin;Qual Life Res,2021
5. Inflamm-aging. An evolutionary perspective on immunosenescence;Franceschi;Ann N Y Acad Sci,2000