1. Inflammatory Bowel Disease Unit, Hospital Clínic de Barcelona, IDIBAPS, CIBERehd , Barcelona , Spain
2. Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science , Rochester, MN , USA
3. Department of Medicine, University of Michigan , Ann Arbor, MI , USA
4. Department of Gastroenterology, Royal London Hospital, Barts Health NHS Trust , London , United Kingdom
5. AbbVie Inc , North Chicago, IL , USA
6. AbbVie and the Comparative Health Outcomes, Policy, and Economics Institute, University of Washington , Seattle, WA , USA
7. Department of Gastroenterology and Hepatology, University Hospital Leuven , Leuven , Belgium