1. Woolf, A.D., Pfleger, B.: Burden of major musculoskeletal conditions. Bull. World Health Organ. 81, 646–656 (2003)
2. Scottish Arthroplasty Project Biennial Report 2012, NHS National Services Scotland, p. 9, http://www.arthro.scot.nhs.uk/Reports/sap_national_report_2012.pdf
3. Skelton, D., Todd, C.: What are the main risk factors for falls among older people and what are the most effective interventions to prevent these falls? Copenhagen, WHO Regional Office for Europe (2004), http://www.euro.who.int/document/E82552.pdf
4. Thomas, S., Mackintosh, S., Halbert, J.: Does the ‘Otago exercise programme’ reduce mortality and falls in older adults?: a systematic review and meta-analysis. Age Ageing 39(6), 681–687 (2010)
5. Applegate, W.B., Miller, S.T., Graney, M.J., Elam, J.T., Burns, R., Akins, D.E.: A Randomized, Controlled Trial of a Geriatric Assessment Unit in a Community Rehabilitation Hospital. New England Journal of Medicine 322, 1572–1578 (1990)