1. University of Edinburgh; Usher Institute of Population Health Sciences and Informatics; Edinburgh UK EH8 9AG
2. Newcastle University; Institute of Cellular Medicine; 4th Floor, William Leech Building Framlington Place Newcastle upon Tyne UK NE2 4HH
3. National University of Ireland Galway (NUIG), Portiuncula University Hospital & Galway University Hospital, Saolta University Health Care Group; Galway Ireland
4. Queen Elizabeth Hospital; Department of General and Vascular Surgery; Queen Elizabeth Avenue Sheriff Hill Gateshead Tyne and Wear UK NE9 6SX
5. Freeman Hospital; Northern Vascular Centre; Newcastle upon Tyne UK NE7 7DN