1. County Durham and Darlington NHS Foundation Trust; Durham UK
2. Translational Research in GastroIntestinal Disorders; University of Leuven; Leuven Belgium
3. Cliniques Universitaires Saint-Luc; Université Catholique de Louvain; Brussels Belgium
4. PHARMED; Université Libre de Bruxelles; Brussels Belgium
5. Houston Methodist Hospital; Weill Cornell Medical College; Houston TX USA
6. Peking Union Medical College Hospital; Chinese Academy of Medical Science; Beijing China
7. Shire; Brussels Belgium
8. Shire; Zug Switzerland
9. Orion Statistical Consulting BV; Hilvarenbeek the Netherlands