1. First Department of Surgery, Vascular Unit, National & Kapodistrian Universtiy of Athens, Athens, Greece
2. Surgery Working Group, Society of Junior Doctors, Athens, Greece
3. Laboratory for Experimental Surgery and Surgical Research “N. S. Christeas”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
4. Department of Vascular Surgery, School of Medicine, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
5. Department of Vascular and Endovascular Surgery, Paracelsus Medical University, Nuremberg, Germany