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3. Ministry of Health, Labour and Welfare 2013 Results of a survey on end-of-life care http://www.mhlw.go.jp/stf/shingi/0000042968.html
4. “Living will” of Japan society for dying with dignity http://www.songenshi-kyokai.com/living_will.html
5. Japan society for dying with dignity http://www.songenshi-kyokai.com/about/purpose.html