1. Department of Gastroenterology, Hepatopancreatology, and Digestive Oncology; CUB Hôpital Erasme; Université Libre de Bruxelles; Brussels Belgium
2. Department of Gastroenterology and Hepatology; CHU UCL Namur; Université Catholique de Louvain; Yvoir Belgium
3. Laboratory of Experimental Gastroenterology; Université Libre de Bruxelles; Brussels Belgium
4. Department of Gastroenterology and Hepatology; Clinique St Luc; Bouge Belgium