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