1. Department of Economic and Social Affairs, Population Division, United Nations. World Population Aging: 1950–2050: World. Available from http://www.un.org/esa/population/publications/worldageing19502050/pdf/001world.pdf.
2. One in 10 people in Taiwan aged over 65: ministry,2010
3. Dealing with Taiwan’s rapidly graying society,2011
4. Department of Economic and Social Affairs, Population Division, United Nations. World Population Aging: 1950–2050: China. Available from http://www.un.org/esa/population/publications/worldageing19502050/pdf/065china.pdf.
5. Prevalence of chronic disease in the elderly based on a national pharmacy claims database;Naughton;Age Ageing,2006