Toward an Integrated Clinical, Molecular and Serological Classification of Inflammatory Bowel Disease: Report of a Working Party of the 2005 Montreal World Congress of Gastroenterology

¹Department of Medicine, Mount Sinai Hospital IBD Centre, University of Toronto, Toronto, Ontario, Canada

²Department of Gastroenterology, Western General Hospital, University of Edinburgh, Edinburgh, UK

³Gastroenterology Unit, University of Oxford, Gibson Laboratories, Radcliffe Infirmary, Oxford, UK

⁴Department of Medicine, Section of Gastroenterology, University of Manitoba IBD Clinical and Research Centre, Winnipeg, Manitoba, Canada

⁵The Harvey M and Lyn P Meyerhoff Inflammatory Bowel Disease Center, Department of Medicine, John Hopkins University School of Medicine, and Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA

⁶Department of Clinical Sciences, University of Rome “La Sapienza”, Rome, Italy

⁷Department of Hepatogastroenterology and Registre EPIMAD, Hôpital HURIEZ, CH et U Lille, France

⁸Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria

⁹Department of Pathology, University Hospital, Leuven, Belgium

¹⁰Department of Gastroenterology, University of Oxford, Oxford, UK

¹¹Department of Gastroenterology, Rambam Medical Center, Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel

¹²Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA

¹³Department of Pathology, VU University Medical Centre, Amsterdam, The Netherlands

¹⁴Department of Pathology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada

¹⁵Mount Sinai School of Medicine, New York, USA

¹⁶Institute for Clinical Molecular Biology, Christian-Albrechts-University, Kiel, Germany

¹⁷Cedars-Sinai Division of Gastroenterology, Inflammatory Bowel Disease Center and Immunobiology Institute, UCLA School of Medicine, Los Angeles, California, USA

¹⁸Division of Gastroenterology, University Hospital Gasthuisberg, Leuven, Belgium

¹⁹Department of Cellular Pathology, John Radcliffe Hospital, University of Oxford, Oxford, UK