1. Department of Surgery, Division of Surgical Oncology, Metaxa Cancer Memorial Hospital, Piraeus 18573, Greece
2. Third Department of Surgery, Attiko University Hospital, National and Kapodistrian University of Athens, Athens 12462, Greece
3. First Department of Surgery, Laiko General Hospital, Athens 11527, Greece
4. Laboratory of Experimental Surgery and Surgical Research, National and Kapodistrian University of Athens, Athens 11527, Greece