1. WHO Statistical Information System 2003. Available at: http://www3.who.int/whosis/menu.cfm?path=whosis,topics,population&language=English . Accessed 16.8.2004.
2. Noro A. Long-term institutional care among Finnish elderly population. Trends and potential for discharge. STAKES, Research report 87/1998. Helsinki.
3. Statistics Finland 2003. Available at: http://www.ulastokeskus.fi/tk/tp/tasku/taskue_vaesto.html. Accessed 16.8.2004.
4. Cassel CK. Successful aging. How increased life expectancy and medical advances are changing geriatric care. Geriatrics 2001; 56: 35–9; quiz 40.
5. Roos NP. Havens B. Predictors of successful aging: a twelve-year study of Manitoba elderly. Am J Public Health 1991; 81: 63–8.