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2. Ministry of Education, Culture, Sports, Science and Technology [Internet]. Publication place; publisher; 2012 [cited 1 August 2018]. [On the nature of lifelong learning in a long-lived society: A happy-aged society with 100 years of life and the happiness of learning at any age]. Available from: http://www.mext.go.jp/component/a_menu/education/detail/icsFiles/afieldfile/2012/03/28/1319112_1.pdf. Japanese.
3. Guidance statement on appropriate medical services for the elderly by the study group of the Ministry of Health, Labour and Welfare
4. Headquarters for the promotion of social security system reform [Internet]; 2015. Publication place; publisher [cited 1 August 2018]. [First report of the specialist Committee on the Promotion of Reform through the use of medical and nursing care information: estimating the number of hospital beds by medical function and formulating a regional medical care plan]. Available from: http://www.kantei.go.jp/jp/singi/shakaihoshoukaikaku/houkokusyo1.pdf. Japanese.
5. National Council for Social Security System Reform [Internet]. Publication place; publisher; 2013 [cited 1 August 2018]. [Report of the national Council for the Reform of the Social Security System: A road map for passing on reliable social security to future generations]. Available from: http://www.kantei.go.jp/jp/singi/kokuminkaigi/pdf/houkokusyo.pdf. Japanese.