1. From the University of California San Diego, La Jolla (W.J.S.); Western University, London, ON, Canada (B.G.F.); the Inflammatory Bowel Disease Center, Academic Medical Center, Amsterdam (G.D.); the Center for Crohn’s Disease and Ulcerative Colitis, Atlanta Gastroenterology Associates, Atlanta (D.C.W.); the Division of Gastroenterology, University Hospital Medical Center Bežanijska Kosa, Belgrade, Serbia (I.J.); the Feinberg School of Medicine, Chicago (S.B.H.); APC Microbiome Ireland, College of...