1. Erasmus MC University Medical Center RotterdamRotterdam The Netherlands
2. Digestive Endoscopy Unit University Hospital A. Gemelli, IRCCS RomeItaly
3. Department of Surgical Pathology Diagnostic Center ItalyMilan Italy
4. Vita Salute San Raffaele University Milan Italy
5. Santa Chiara Hospital Trento Italy
6. University Hospital of Santiago de Compostela Santiago de Compostela Spain
7. Kindai University OsakaJapan
8. Kyoto Prefectural University of Medicine Kyoto Japan
9. Pathan Laboratory Rotterdam The Netherlands
10. Royal Adelaide Hospital Adelaide Australia
11. Institut Paoli‐Calmettes Marseilles France
12. University Hospital Leuven Leuven Belgium
13. Tel Aviv Sourasky Medical Center Tel Aviv Israel
14. University of California Irvine
15. Yale University School of Medicine New Haven
16. Stony Brook University Hospital New York USA
17. Karolinska University Hospital Huddinge Sweden