1. Defining Primary Care: An Interim Report;Donaldson M,1994
2. Geographic variation in FP and GP scope of practice in Ontario: comparative provincial study;Wenghofer EF;Can Fam Physician,2018
3. Rural physicians' scope of practice on remote islands: a case report of severe pneumonia that required overnight artificial airway management;Ohta R;J Rural Med,2017
4. United Nations. World Population Prospects. The 2019 revision. (2019). Accessed. July 1, 2021: https://population.un.org/wpp/.
5. Ministry of Health, Labour and Welfare. (2017). Accessed. July 1, 2021: https://www.mhlw.go.jp/english/database/db-hss/ps.html.