1. United Nations Department of Economic and Social Affairs, Population Division (2013) World Population Ageing 2013. United Nations, New York
2. World Health Organization (2012) Fact sheet 344: Falls. http://www.who.int/mediacentre/factsheets/fs344/en/ . Accessed 6 June 2015
3. Kramarow E, Chen LH, Hedegaard H et al (2015) Deaths from unintentional injury among adults aged 65 and over: United States, 2000–2013. NCHS Data Brief. http://www.cdc.gov/nchs/data/databriefs/db199.pdf . Assessed 5 July 2016
4. Centers for Disease Control and Prevention (2006) Fatalities and injuries from falls among older adults, United States, 1993–2003 and 2001–2005. Morb Mortal Wkly Rep 55:1221–1224
5. Gillespie LD, Robertson MC, Gillespie WJ et al (2012) Interventions for preventing falls in older people living in the community. Cochrane Database Syst Rev CD007146. doi: 10.1002/14651858.CD007146.pub3