1. Hepato-Gastroenterology and Digestive Oncology, University Hospital CHU of Liège , Liège , Belgium
2. Centre for Reproductive Medicine, UZ Brussel , Brussels , Belgium
3. Ferring International Center S.A , Saint-Prex , Switzerland
4. Ferring Pharmaceuticals A/S – International PharmaScience Center , Kastrup , Denmark
5. Department of Gastroenterology and Endoscopy, IRCCS San Raffaele and Vita-Salute San Raffaele University , Italy
6. University of Lorraine, CHRU-Nancy, Department of Gastroenterology , F-54000 Nancy , France
7. University of Lorraine, Inserm, NGERE , F-54000 Nancy , France