1. Cell and Molecular Biology Group; Department of Clinical Medicine; Trinity Translational Medicine Institute; Trinity College Dublin; St James's Hospital; Dublin 8 Ireland
2. Division of Gastroenterology; Mayo Clinic Health System La Crosse - Franciscan Healthcare; La Crosse WI USA
3. Division of Gastroenterology; Mayo Clinic; Rochester MN USA
4. Department of Surgery; Trinity Translational Medicine Institute; Trinity College Dublin; St James's Hospital; Dublin 8 Ireland
5. Department of Histopathology; St James's Hospital; Dublin 8 Ireland
6. Department of Histopathology; Beaumont Hospital; Dublin 9 Ireland
7. Faculty of Medicine; Mansoura University; Mansoura Egypt
8. Department of Histopathology and Morbid Anatomy; Trinity College Dublin; Dublin Ireland
9. Faculty of Medicine; The University of British Columbia; Vancouver BC Canada