1. Provensis Limited, London, UK
2. Cabinet De Medecine Vasculaire, Lyon, France
3. University of Birmingham, and Heart of England NHS Foundation Trust, Birmingham, UK
4. UCL Medical School, The Middlesex Hospital, London, UK
5. Therapeutisch Vascular Centrum, Gavere, Belgium
6. Leeds Vascular Institute, The General Infirmary at Leeds, Leeds, UK
7. Department of Vascular Surgery, Sint Franciscus Gasthuis Kleiweg, Rotterdam, The Netherlands
8. Department of Dermatology, University Hospital Maastricht, Maastricht, The Netherlands
9. Vascular Surgery Unit, Department of Surgery, Skaraborg Hospital, Skovde, Sweden
10. Statisfaction Statistical Consultancy Ltd, Bexhill on Sea, UK