1. Internal Medicine Department, Hospital Clinico San Carlos De Madrid, Calle Profesor Martin Lagos, 28040 Madrid
2. Diabetic Foot Unit, Vascular Surgery Department, Hospital Fundación Alcorcón, Madrid, Spain
3. Diabetes Research Fellow; King's College Hospital, Denmark Hill, London
4. Trauma and Ortophaedic Department, King´s College Hospital, London, UK
5. Franziskus Krankenhaus Berlin, Budapester Strasse, Berlin
6. Diabetic Foot Center, University of Roma Tor Vergata, Viale Oxford 81, Roma
7. Diabetic Foot Section, University of Pisa, Ospedale di Cisanello, via Paradisa 2, Pisa
8. Vascular Surgery Department, Donostia Hospital Universitario San Sebastian, Calle Prim N° 14 - 20006 San Sebastian
9. Endocrinology Department, University Hospital Center, Dijon, France
10. Endocrinology Department, University Hospital Center, Lyon, France
11. Diabetic foot Unit, Universidad Complutense de Madrid, Spain
12. Familie Ziekenhuis, Department of Endocrinology, Chimay, Belgium