1. Vascular Surgery, Department of Medicine and Surgery, University of Parma, Parma, Italy
2. Department of Vascular Surgery, Northwest Clinics, Alkmaar, the Netherlands
3. Department of Radiology, Spaarne Hospital, Haarlem, the Netherlands
4. Department of Radiology, St. Antonius Hospital, Nieuwegein, the Netherlands
5. Vascular Service, Department of Surgery, Changi General Hospital, Singapore
6. University Hospitals Harrington Heart and Vascular Institute, Cleveland, OH, USA
7. Diabetic Foot Unit, San Carlo Clinic, Paderno Dugnano, Italy