Lichtenstein Gary R, Rubin David T
Division of Gastroenterology, Department of Medicine, The Raymond and Ruth Perelman School of Medicine of the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
University of Chicago Medicine Inflammatory Bowel Disease Center, Chicago, Illinois, USA.
Am J Gastroenterol. 2020 Oct;115(10):1566-1569. doi: 10.14309/ajg.0000000000000817.