title: Is Long-Term Therapy With Thiopurines Effective for Maintaining Remission in Patients With Moderate-To-Severe Ulcerative Colitis?
authors.affiliation: Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, Korea.
authors.forename: Seong Ran
authors.initials: SR
authors.lastname: Jeon
authors.affiliation: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
authors.forename: Won Ho
authors.initials: WH
authors.lastname: Kim