1. [1] Cabinet Office, Government of Japan. Aging situation (in Japanese) [cited 2020 November 6]. Available from: https://www8.cao.go.jp/kourei/whitepaper/w-2017/zenbun/pdf/1s1s_01.pdf.
2. [2] Ministry of Health, Labour and Welfare. Welfare labour white paper (in Japanese) [cited 2020 November 6]. Available from: http://www.mhlw.go.jp/wp/hakusyo/kousei/16/dl/all.pdf.
3. [3] Campbell JC, Ikegami N. Long-term care insurance comes to Japan. Health Aff. 2000; 19(3): 26-39, doi:10.1377/hlthaff.19.3.26.
4. [4] Ministry of Health, Labour and Welfare. Changes in nursing care benefits and long-term care insurance premiums (in Japanese) [cited 2020 November 6]. Available from: http://www.mhlw.go.jp/seisakunitsuite/bunya/hukushi_kaigo/kaigo_koureisha/chiiki-houkatsu/dl/link1-2.pdf.
5. [5] Ministry of Health, Labour and Welfare. Care prevention manual revised version (in Japanese) [cited 2020 November 6]. Available from: http://www.mhlw.go.jp/topics/2009/05/dl/tp0501-1_1.pdf.