1. 1. Ministry of Health, Labor and Welfare. Basic policy on economic and fiscal management and reform 2017. https://www5.cao.go.jp/keizai-shimon/kaigi/cabinet/2017/decision0609.html (accessed October 8, 2021). (in Japanese)
2. 2. Ministry of Health, Labor and Welfare. 4. Percentage of generic drugs used by each insurer, (as of March 2021). https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000190726.html (accessed October 8, 2021). (in Japanese)
3. 3. Medical Division, Insurance Bureau, Ministry of Health, Labor and Welfare. About the 2016 drug price system reform. https://www.mhlw.go.jp/file/06-Seisakujouhou-12400000-Hokenkyoku/0000114391.pdf (accessed October 8, 2021). (in Japanese)
4. 4. Ministry of Health, Labor and Welfare. List of items listed in NHI price standards and information on generic drugs (until March 31, 2nd year of Reiwa) 2 injections. https://www.mhlw.go.jp/topics/2019/08/tp20190819-01.html (accessed October 8, 2021). (in Japanese)
5. 5. Ministry of Health, Labor and Welfare. List of items listed in NHI price standards and information on generic drugs (until March 31, 2nd year of Reiwa). List of basic drugs, etc. for which modified dispensing is permitted as with generic drugs. https://www.mhlw.go.jp/topics/2019/08/tp20190819-01.html (accessed October 8, 2021). (in Japanese)