1. St George's Vascular Institute; St George's Healthcare NHS Trust; London; UK
2. Department of Endocrinology; University Hospital of Malmö; Malmö; Sweden
3. Southern Arizona Limb Salvage Alliance (SALSA); University of Arizona College of Medicine; Tucson; AZ; USA
4. IWGDF; Heemstede; The Netherlands
5. Service de diabétologie, Hôpital Pitié-Salpêtrière; Assistance Publique des Hôpitaux de Paris, and Université P et M Curie; Paris; France
6. School of Healthcare Studies; Cardiff University; Cardiff; UK
7. Foot Ulcer Trials Unit; Nottingham University Hospitals Trust; Nottingham; UK