1. Southwestern Academic Limb Salvage Alliance (SALSA), Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
2. Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
3. Department of Orthopedics, University of Texas Health Science Center, San Antonio, TX, USA
4. Diabetic Foot Unit, Policlinico Abano Terme, Padua, Italy
5. Manchester University NHS Foundation Trust, Manchester, UK