Su1938 - Colonic Treg Levels are Reduced in Patients with UC Achieving Clinical Remission, but are not Differentially Affected by Etrolizumab Dose - Fuh, Franklin; Tew, Wei; Keir, Mary; Looney, Caroline; Maciuca, Romeo; McBride, Jacqueline; Ramirez-Montagut, Teresa (Gastroenterology (New York, N.Y. 1943), 2017)