1. Usher Institute of Population Health Sciences and Informatics, The University of Edinburgh; Cochrane Vascular; Teviot Place Edinburgh UK EH8 9AG
2. University Hospital Southampton NHS Foundation Trust; Southampton General Hospital Tremona Road Southampton UK S016 6YD
3. University of Southampton; Clinical and Experimental Sciences Academic Unit; South Academic Block, Mailpoint 801 Southampton General Hospital, Tremona Road Southampton UK S016 6YD
4. The University of Edinburgh; College of Medicine and Veterinary Medicine; Edinburgh UK EH16 4TJ
5. Freeman Hospital; Northern Vascular Centre; Freeman Road Newcastle upon Tyne UK NE7 7DN