Ananthakrishnan Ashwin N, Nguyen Geoffrey C, Bernstein Charles N
Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
Mount Sinai Hospital Centre for Inflammatory Bowel Disease, University of Toronto, Toronto, Ontario, Canada.
Gastroenterology. 2021 Jan;160(1):445-451. doi: 10.1053/j.gastro.2020.08.060. Epub 2020 Oct 1.