1. Diabetic Foot Unit, Vascular Surgery Department, Foundation Alcorcon University Hospital, Madrid, Spain
2. Internal Medicine Department, San Carlos Clinic Hospital, Madrid, Spain
3. Diabetes Research Fellow; King's College Hospital, London, UK
4. Trauma and Ortophaedic Department, King's College Hospital, London, UK
5. Franziskus Hospital, Berlin, Germany
6. Diabetic Foot Center, University of Tor Vergata, Rome, Italy
7. Diabetic Foot Section, Pisa University Hospital, Pisa, Italy
8. Vascular Surgery Department, Donosti University Hospital, Donosti, Spain
9. Endocrinology Department, University Hospital Center, Dijon, France
10. Endocrinology Department, University Hospital Center, Lyon, France
11. Diabetic Foot Unit, Complutense University Clinic, Madrid, Spain
12. H Familie Ziekenhuis and Centre de Santé des Fagnes, Department of Endocrinology, Rumst and Chimay, Belgium