Michel Adamina1,2, Gioia Pozza3,4. 1. Department of Surgery, Kantonsspital Winterthur, 8401, Winterthur, Switzerland. michel.adamina@gmail.com. 2. Faculty of Medicine, University of Basel, Basel, Switzerland. michel.adamina@gmail.com. 3. Department of Surgery, Kantonsspital Winterthur, 8401, Winterthur, Switzerland. 4. Department of Surgery, University of Trieste, Trieste, Italy.