1. University of Chicago Medicine Inflammatory Bowel Disease Center Chicago IL USA
2. Pfizer Inc New York NY USA
3. Department of Gastroenterology University Hospitals Leuven Leuven Belgium
4. Humanitas Clinical and Research Center – IRCCS and Department of Biomedical Sciences Humanitas University Milan Italy
5. Institute of Digestive Disease Department of Medicine and Therapeutics LKS Institute of Health Science The Chinese University of Hong Kong Hong Kong
6. Pfizer Inc Collegeville PA USA