2 4th Department of Surgery, Agrinio General Hospital, Agrinio, Greece.
3 4th Department of Surgery, General University Hospital Attikon, Athens, Greece.
4 Second Department of Radiology, National & Kapodistrian University of Athens, School of Medicine, University General Hospital 'Attikon', Athens, Greece.
5 4th Department of Surgery, General University Hospital Attikon, Athens, Greece pant.greek@gmail.com.