1. Wound Healing and Cytoprotection Group, Department of Pharmaceuticals, Biomedical Research Direction; Center for Genetic Engineering and Biotechnology; Havana Cuba
2. Diabetic Foot Ulcer Service, National Institute of Angiology and Vascular Surgery; Salvador Allende Hospital; Havana Cuba
3. National Center for Integral Diabetes Care; Havana Cuba
4. Southern Arizona Limb Salvage Alliance (SALSA), Department of Surgery; University of Arizona College of Medicine; Tucson AZ USA