1. World Health Orgaization (WHO). Global health and aging. Availablefrom https://www.who.int/ageing/publications/global_health.pdf. [Last accessed on 2021 Apr 06].
2. United Nations Department of Economic and Social Affairs (UN DESA). World population ageing 2020 higlights. 2020.Available from https://www.un.org/development/desa/pd/sites/www.un.org.development.desa.pd/files/undesa_pd-2020_world_population_ageing_highlights.pdf. [Last accessed on 2021 Apr 06].
3. The concept of successful aging: A review article;Estebsari;CurrAging Sci,2020
4. Successful ageing in the oldest old: Objectively and subjectively measured evidence from a population-based survey in Germany;Plugge;Eur J Ageing,2021
5. Effects of leisure participation on life satisfaction in older korean adults: A panel analysis;Yoon;Int J Environ Res Public Health,2020