1. Dept. of Digestive Surgery, Groeninge Hospital, Kortrijk, Belgium
2. Dept. of Gastroenterlogy, Onze-Lieve-Vrouw-ziekenhuis, Aalst, Belgium
3. Interdisiciplinary Research Center, Catholic University Leuven Campus Kortrijk, Kortrijk, Belgium
4. Dept. of Gastroenterology, Groeninge Hospital, Kortrijk, Belgium