G Dapri1,2, M Degueldre3. 1. Department of Gastrointestinal Surgery, European School of Laparoscopic Surgery, Saint-Pierre University Hospital, Université Libre de Bruxelles, Brussels, Belgium. 2. Laboratory of Anatomy, Faculty of Medicine and Pharmacy, University of Mons, Mons, Belgium. 3. Department of Gynecology and Obstectrics, Saint-Pierre University Hospital, Brussels, Belgium.