1. North Tyneside General Hospital; North Shields UK
2. Sana Klinikum Offenbach; Frankfurt Germany
3. Hôtel Dieu-CHU de Nantes; Nantes France
4. University of Genoa and IRCCS S. Martino; Genoa Italy
5. Haukeland University Hospital; Bergen Norway
6. AstraZeneca R&D; Mölndal Sweden
7. Department of Surgery; Centre for Digestive Diseases; Karolinska University Hospital; CLINTEC; Karolinska Institutet; Stockholm Sweden