1 B Department of Propaedeutic Surgery and Renal Transplant Center, Laikon General Hospital, National and Kapodistrian University of Athens, Athens 11527, Greece. Electronic address: actampaki@yahoo.com.
2 Department of General and Visceral Surgery, Basel University Hospital, Basel, Switzerland.
3 Department of Vascular Surgery and Renal Transplant Center, Basel University Hospital, Basel, Switzerland.
4 Department of Pharmacology, National and Kapodistrian University of Athens, Athens 11527, Greece.