Columbia University Irving Medical Center/New York-Presbyterian Hospital - Center for Inflammatory Bowel Disease, Zhejiang University - Department of Gastroenterology, Zhejiang University - Department of Gastroenterology, Mayo Clinic - Florida - Department of Gastroenterology and Hepatology, University of Manitoba - Section of Gastroenterology, University of Birmingham - Institute of Translational of Medicine, Columbia University Irving Medical Center/New York Presbyterian Hospital - Center for Inflammatory Bowel Disease, Independent, Columbia University Irving Medical Center/New York-Presbyterian Hospital - Division of Pediatric Gastroenterology and Columbia University Irving Medical Center/New York-Presbyterian Hospital - Division of Colorectal Surgery