1. Dynacare Laboratories Brampton Ontario Canada
2. Department of Clinical and Experimental MedicineUniversity of Florence Florence Italy
3. Department of Surgery and Translational MedicineUniversity of Florence Florence Italy
4. Gastrointestinal Surgery UnitFlorence Careggi University Hospital Florence Italy
5. Institute of PathologyMedical University of Graz Graz Austria
6. Gastro‐Intestinal Viral Oncology GroupIngham Institute for Applied Medical Research, Liverpool Sydney New South Wales Australia
7. South Western Sydney Clinical SchoolUniversity of New South Wales, Kensington Sydney New South Wales Australia
8. Department of Gastroenterology & HepatologyBankstown‐Lidcombe Hospital, South Western Sydney Local Health Network, Bankstown Sydney New South Wales Australia
9. Institute of PathologyUniversity of Bern Bern Switzerland
10. Institute of PathologyKantonsspital Baselland Liestal Switzerland
11. Cambridge University HospitalsNHS Foundation Trust Cambridge UK
12. Department of Pathology and laboratory MedicineCedars‐Sinai Medical Center Los Angeles California
13. Department of Pathology and Laboratory MedicineMount Sinai Hospital Toronto Ontario Canada