1. Department of GastroenterologyQueen Alexandra HospitalPortsmouthHampshireUK
2. Department of GastroenterologyKing's College Hospital NHS Foundation TrustLondonUK
3. Department of GastroenterologyLuzerner KantonspittalLucerneSwitzerland
4. Department of GastroenterologyCatharina HospitalEindhoventhe Netherlands
5. Department of GastroenterologyDiagnostični center BledLjubljanaSlovenia
6. StatsConsultancy LimitedAmershamUK
7. Centre Hospitalier Universitaire and Faculté de Médecine de NantesInstitut des Maladies de l'Appareil DigestifNantesFrance
8. Department of Gastroenterology and Interventional EndoscopySt John of God HospitalRegensburgBavariaGermany
9. Department of GastroenterologyNuovo Regina Margherita HospitalRomeItaly
10. Department of MedicineUniversity HospitalErlangenGermany
11. Department of Gastroenterology and HepatologyUniversitaire ZiekenhuizenLeuvenBelgium
12. Istituto Clinico HumanitasRozzanoLombardiaItaly