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http://www.stat.go.jp/english/index.htm
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http://www.boston.com/news/world/asia/articles/2007/09/18/japan_eyes_robots_to_support_aging_population/
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http://www.jup.com
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, Trends in Media Usage and Life Style of Mature Ages-A Case Study of 2004 Shih Hsin Communication Database, Master Thesis, Taipei, Taiwan (R.O.C) (2006)
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