1. Major amputations: clinical patterns and predictors;Dormandy;Semin Vasc Surg,1999
2. Major amputations in a defined population: incidence, mortality and results of treatment;Kald;Br J Surg,1989
3. Outcome of symptomatic leg ischaemia: four year morbidity and mortality in Vadstene, Sweden;Jonsson;Eur J Vasc Surg,1996
4. Hospital Episode Statistics. The NHS Information Centre for Health and Social Care. Main procedures and interventions 2009–2010. http://www.hesonline.nhs.uk/Ease/servlet/ContentServer?siteID=1937&categoryID=192 [accessed 15.03.11].
5. The NHS atlas of variation in healthcare – reducing unwarranted variation to increase value and improve quality; 2010.