1. Fourth Department of Surgery, Medical School, University of Athens, ATTIKON General Hospital
2. Third Department of Critical Care, Medical School, Athens University, Eugenidion Hospital
3. First Department of Obstetrics and Gynecology, Athens University Medical School, Alexandra Hospital
4. Department of Radiology, General Hospital ‘St. Panteleimon’
5. First Department of Surgery, University of Athens Medical School, Laikon Hospital