[1] Active Ageing: A Policy Framework (2002) World Health Organization, 21-18.
http://www.who.int/ageing/active_ageing/en/
[2] Ministry of Health, Labour and Welfare (2012) Healthy Japan 21 Final Assessment, 6-7.
http://www.mhlw.go.jp/stf/houdou/2r9852000001r5gc.html
[3] Ministry of Health, Labour and Welfare (2013) On the Future Prospects of the Elderly Population.
http://www.mhlw.go.jp/stf/seisakunitsuite/bunya/hukushi_kaigo/kaigo_koureisha/chiiki-houkatsu/
[4] Aoki, M. and Aoki, K. (2009) Analysis of Asbestos Research Conducted in Japan : Analyses of The Thesaurus Found in Japan: Analyses of The Thesaurus Found in The Literature and Free Terms Contained in The Titles. Juntendo Medical Journal, 55, 478-486.
[5] Shiromaru,M., Mizutani, S., Matsumoto, H. (2012) Trends in the Medical Studies on “Stress-Coping” In Japan: A Text-Mining Analysis. Sapporo Journal of Health Sciences, 1, 519-528.
[6] Cho,M.,Taniguchi, T., Harano, K.,et al.(2013) Trends of Study in Care and Welfare in the “Research Journal of Care and Welfare”: Text Mining Using a Paper Title. Research Journal of Care and Welfare, 20, 152-158.
[7] Japana Centra Revuo Medicina, Web Database, Japan Medical Abstracts Society.
http://login.jamas.or.jp/enter.html
[8] Suzuki, T. (2010) Relationship between the Concept of Healthy Life Expectancy and Methods of Extending it. In: Orimo, H., Ed., Gerontology, 2nd Edition, University of Tokyo Press, Tokyo, 519-528.
[9] The National Survey on Active Aging 2009 (2010), Japan Health Promotion & Fitness Foundation, Tokyo, 2-5.
[10] Cochrane Library, Web Database, Cochrane Collaboration.
http://www.thecochranelibrary.com/view/0/index.html