1. Cliniques Universitaires Saint‐Luc Brussels Belgium
2. Unità Operativa Complessa di Gastroenterologia Università degli Studi di Roma “La Sapienza” Rome Italy
3. Department of Digestive Diseases Instituto de Investigación Sanitaria del Hospital Clínico San Carlos Hospital Clínico San Carlos Universidad Complutense de Madrid Madrid Spain
4. University of Gothenburg Gothenburg Sweden
5. Niepubliczny Zaklad Opieki Zdrowotnej Szczecin Poland
6. Shire Movetis NV Turnhout Belgium
7. Shire Basingstoke UK
8. Shire Chesterbrook PA USA