1. Europe Comission. ECHI - European Core Health Indicators. Indicators and data; 2021. Available from: https://ec.europa.eu/health/indicators/echi/list_en. Accessed January 3, 2021.
2. Eurostat Statistics Explained. Unmet health care needs statistics. Eurostat; January, 2021. Available from: https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Unmet_health_care_needs_statistics. Accessed January 4, 2021.
3. World Health Organization. 10 global health issues to track in 2021. WHO: Newsroom spotlight; 2021. Available from: https://www.who.int/news-room/spotlight/10-global-health-issues-to-track-in-2021. Accessed January 3, 2021.
4. The Academy of Medical Sciences, British Academy for the humanities and social sciences, NHS England. Unmet need in healthcare. Summary of a Roundtable Held at the Academy of Medical Sciences on 31 July 2017, Held with Support from the British Academy and NHS England. London; 2017:1–16. Available from: https://acmedsci.ac.uk/file-download/430378. Accessed October 1, 2021.
5. Unmet healthcare needs of elderly people in Korea