1. University Department of Medicine and Diabetes, Manchester Royal Infirmary, Manchester, England.
2. Scholl College’s Center for Lower Extremity Ambulatory Research, Rosalind Franklin University, North Chicago, IL.
3. Southern Arizona Limb Salvage Alliance, University of Arizona, Tucson, AZ.
4. Division of Endocrinology, Metabolism, and Diabetes, University of Miami School of Medicine, Miami, FL.