1. Second Department of Propedeutic Surgery, ‘Laiko’ General Hospital, University of Athens Medical School, 11527 Athens, Greece.
2. Second Department of Propedeutic Surgery, ‘Laiko’ General Hospital, University of Athens Medical School, 11527 Athens, Greece
3. Department of Experimental Physiology, University of Athens Medical School, 11527 Athens, Greece
4. Department of Biological Chemistry, University of Athens Medical School, 11527 Athens, Greece