1. Ministry of Health and Welfare. Annual report of health and welfare. Tokyo: Ministry of Health and Welfare; 1978. (In Japanese). http://www.mhlw.go.jp/toukei_hakusho/hakusho/kousei/1978/dl/03.pdf . Accessed 19 Dec 2017
2. Health, Labour and Welfare Statistics Association. Trend of national health 2017–2018. Tokyo: Health, Labour and Welfare Statistics Association; 2017. (in Japanese)
3. Cambell JC. How policies change: the Japanese government and the aging society. Princeton: Princeton University Press; 1992.
4. Maeda D. The outline of new public long-term care insurance program. In: Takagi F, editor. Aging in Japan, vol. 2003. Tokyo: Japan Aging Research Center; 2003. p. 188–91.
5. Montogomery RJV, Rowe JM, Kosloski K. Family caregiving. In: Blackburn JA, Dulmus CN, editors. Handbook of gerontology: evidence-based approaches to theory, practice, and policy. Hoboken, NJ: John Willey & Sons, Inc.; 2007. p. 426–54.