1. Freeman Hospital; Department of Vascular Surgery; Freeman Road High Heaton Newcastle upon Tyne UK NE7 7DN
2. University Hospital of North Tees; Department of Surgery; Hardwick Stockton-on-Tees UK TS19 8PE
3. Queens Hospital; Directorate of Surgery; Rom Valley way Romford Essex UK RM7 0AG
4. Cardiff University; Department of Wound Healing; Heath Park Cardiff Wales UK CF14 4XN