Paolo N C Girotti1, Ingmar Königsrainer2. 1. Department of General, Visceral and Thoracic Surgery, Landeskrankenhaus Feldkirch, Carinagasse 47, 6800, Feldkirch, Austria. paolo.girotti@vlkh.net. 2. Department of General, Visceral and Thoracic Surgery, Landeskrankenhaus Feldkirch, Carinagasse 47, 6800, Feldkirch, Austria.