S0844 Risk of Relapse in Patients With Ulcerative Colitis With Persistent Endoscopic Healing: A Durable Treatment Endpoint. (October 2020) - Jangi, Sushrut; Holmer, Ariela; Dulai, Parambir S.; Boland, Brigid S.; Collins, Angelina; Pham, Lysianne; Sandborn, William J.; Singh, Siddharth