1. Inflammatory Bowel Disease Center, University of Chicago Medicine , Chicago, IL , USA
2. Gastroenterology Division, Hospital Beatriz Ângelo , Loures , Portugal
3. Division of Gastroenterology, Hospital da Luz , Lisbon , Portugal
4. Faculty of Medicine, University of Lisbon , Portugal
5. Division of Gastroenterology, Rabin Medical Center , Petah Tikva , Israel
6. Sackler Faculty of Medicine, Tel Aviv University , Tel Aviv , Israel
7. Netbase Quid™ , Santa Clara, CA , USA
8. Pfizer Inc , New York, NY , USA
9. Pfizer Inc , Collegeville, PA , USA
10. Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai , New York, NY , USA