1. National Confidential Enquiry into Patient Outcome and Death Extremes of age 1999 http://www.ncepod.org.uk/pdf/1999/99full.pdf
2. National Confidential Enquiry into Patient Outcome and Death (NCEPOD) Abdominal aortic aneurysm: a service in need of surgery? 2005 http://www.ncepod.org.uk/2005report2/Downloads/AAA_report.pdf
3. National Confidential Enquiry into Patient Outcome and Death Elective & emergency surgery in the elderly: an age old problem 2010 http://www.ncepod.org.uk/2010report3/downloads/EESE_fullReport.pdf
4. The Vascular Society of Great Britain and Ireland National vascular database report 2009 http://www.vascularsociety.org.uk/vascular/wp-content/uploads/2012/11/NVDREPORTFINAL-10Nov.pdf
5. Variations in mortality after emergency laparotomy: the first report of the UK Emergency Laparotomy Network;Saunders;British Journal of Anaesthesia,2012