1. 2nd Department of Propaedeutic Surgery, National and Kapodistrian University of Athens, Medical School, Athens, Greece
2. Laboratory of Experimental Surgery and Surgical Research “N.S Christeas,” National and Kapodistrian University of Athens, Medical School, Athens, Greece.
3. Department of Anatomy, Medical School, National and Kapodistrian University of Athens, Medical School, Athens, Greece.
4. Third Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
5. 1st Department of Surgery, National and Kapodistrian University of Athens, Athens, Greece.
6. Division of Endocrinology, Diabetes and Metabolism, Department of Clinical Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece