1. Walter, A.: Actitudes hacia el envejecimiento de la población en Europa, University of Sheffiel, United Kingdom (1999)
2. United Nations.: World Population Ageing 2007 (2007), http://www.un.org/esa/population/publications/WPA2007/wpp2007.htm
3. Steg, H., et al.: Europe Is Facing a Demographic Challenge - Ambient Assisted Living Offers Solutions. In: VDI/VDE/IT, Berlin, Germany (2006)
4. Wang, S.J., et al.: Using patient-reportable clinical history factors to predict myocardial infarction. Computers in Biology and Medicine 31(1), 1–13 (2001)
5. Wu, W.H., et al.: MEDIC: Medical embedded device for individualized care. Artificial Intelligence in Medicine 42(2), 137–152 (2008)