1. Central Manchester Foundation Trust, Manchester Diabetes Centre, University of Manchester, Manchester, United Kingdom
2. Department of Podiatric Surgery, Chelmsley Wood Primary Care Trust, Birmingham, United Kingdom
3. College of Podiatric of Medicine, Center for Lower Extremity Ambulatory Research, Rosalind Franklin University, Chicago, Illinois
4. Southern Arizona Limb Salvage Alliance, University of Arizona College of Medicine, Tucson, Arizona