1. Falls in older people. Risk, factors and strategies for prevention;Lord,2001
2. Falls and fear of falling: Which comes first? A longitudinal prediction model suggests strategies for primary and secondary prevention;Friedman;J Am Geriatr Soc,2002
3. Societal consequences of falls in the older population: injuries, healthcare costs and long term reduced quality of life;Hartholt;J Trauma,2011
4. Centers for Disease Control and Prevention (CDC). Cost of fall injuries in older persons in the United States. Available online: http://www.cdc.gov/homeandrecreationalsafety/Falls/data/cost-estimates.html [accessed 10.01.15].
5. World Health Organization (WHO). Falls. Available online: http://www.who.int/mediacentre/factsheets/fs344/en/ [accessed 28.12.2014].