1. Department of Vascular Surgery, Red Cross Hospital, Athens, Greece
2. Center for Learning and Excellence in Vascular and Endovascular Research (CLEVER), Department of Surgery, Division of Vascular Surgery, University of California San Diego, San Diego, CA, USA
3. Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA