Eur J Gastroenterol Hepatol 2020 08;32(8):938-949
aIstituti Clinici Scientifici Maugeri, IRCCS, Gastroenterology Unit of Pavia Institute, University of Pavia, Pavia, Italy bAcademic Unit of Gastroenterology, Royal Hallamshire Hospital, Sheffield, UK cClinical Epidemiology, IRCCS San Matteo Hospital Foundation, Pavia, Italy dHistocompatibility and Immunogenetics Laboratory, NHS Blood and Transplant, Sheffield eHistocompatibility and Immunogenetics, NHS Blood and Transplant, Colindale, London, UK fFirst Department of Internal Medicine, IRCCS Policlinico San Matteo, University of Pavia gAnatomic Pathology Unit, Department of Molecular Medicine and IRCCS San Matteo Hospital, Pavia, Italy hDepartment of Histopathology, Royal Hallamshire Hospital, Sheffield iDepartment of Gastroenterology, Queen Alexandra Hospital, Portsmouth jDepartment of Haematology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK.