Aristidis Veves MD, Rongxiang Xu, MD, Professor of Surgery, Harvard Medical School, Director, The Rongxiang Xu, MD, Center for Regenerative Therapeutics, Research Director, Joslin-Beth Israel Deaconess Foot Center, Beth Israel Deaconess Medical Center One Deaconess Road, Palmer 321A, Boston, MA 02215, USAJohn M. Giurini, DPM, Associate Professor of Surgery, Harvard Medical School, Co-director, Joslin-Beth Israel Deaconess Foot Center, Consultant, Joslin Diabetes Center, Chief, Division of Podiatry, Beth Israel Deaconess Medical Center, One Deaconess Road, Boston, MA 02215, USAMarc L. Schermerhorn, MD, George H.A. Clowes, Jr. Professor of Surgery, Harvard Medical School Chief, Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, 110 Francis Street, Suite 5B, Boston, MA 02215, USA.