1. Severe injury in children Trauma Audit and Research Network 2012 https://www.tarn.ac.uk/Content/ChildrensReport/files/assets/common/downloads/TARN%20document.pdf
2. Trauma Audit and Research Network 2 years of severe injury in children 2013 https://www.tarn.ac.uk/Content/ChildrensReport2/index.html
3. Trauma Audit and Research Network Major trauma in older people https://www.tarn.ac.uk/Content.aspx?c=3793
4. Office for National Statistics Overview of the U.K. population 2017 https://www.ons.gov.uk/peoplepopulationandcommunity/populationandmigration/populationestimates/articles/overviewoftheukpopulation/mar2017
5. AAGBI Guidelines: peri-operative care of the elderly 2014;Griffiths;Anaesthesia,2014