1. Department of Experimental Surgery and Surgical Research “N. S. Christeas," Medical School, National and Kapodistrian University of Athens, Department of Vascular Surgery, Red Cross Hospital
2. 2nd Department of Surgery, “Konstantopoulio-Agia Olga" Hospital (VS), Athens, Greece
3. Department of Clinical Biochemistry, Royal Free Hospital Campus, University College London, United Kingdom,
4. Department of Experimental Surgery and Surgical Research “N. S. Christeas," Medical School, National and Kapodistrian University of Athens