1. Southwestern Academic Limb Salvage Alliance (SALSA), Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA
2. Division of Diabetes, Endocrinology & Gastroenterology, The University of Manchester, and Diabetes Centre, Manchester Royal Infirmary, Manchester, U.K.
3. Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, FL