1. Hull Royal Infirmary; Vascular Unit; Anlaby Road Hull UK HU3 2JZ
2. Glasgow Caledonian University; Graduate School; Cowcaddens Road Glasgow UK G4 0BA
3. Cameron House; Cameron Bridge Windygates Leven UK KY8 5RG
4. London School of Hygiene and Tropical Medicine; Keppel Street London UK WC1E 7HT