1. Nottingham Digestive Diseases CentreUniversity of Nottingham and National Institute for Health Research (NIHR) Nottingham Biomedical Research CentreNottingham University Hospitals NHS Trust and University of NottinghamNottinghamUK
2. Division of Epidemiology and Public HealthUniversity of NottinghamNottinghamUK
3. Department of Internal Medicine VI: Psychosomatic Medicine and PsychotherapyUniversity Hospital TuebingenTuebingenGermany
4. Department of Medical and Surgical SciencesUniversity of BolognaBolognaItaly
5. Translational Research Center for Gastrointestinal DisordersUniversity Hospital LeuvenLeuvenBelgium
6. Digestive System Research UnitUniversity Hospital Vall d’HebronBellaterraSpain
7. Institute of Functional and Motor DisordersCentro Médico TeknonBarcelonaSpain
8. Wingate Institute of NeurogastroenterologyBarts and the London School of Medicine and DentistryQueen Mary University of LondonLondonUK
9. Department of MedicineMcMaster UniversityOntarioCanada