P.11.19: Maintenance of Deep Remission in Patients with Ulcerative Colitis Treated with Thiopurines after Withdrawal of the Drug: Perspective Real-Life Experience of a Single Center. (15th March 2017) - Mazza, M.; Praticò, C.; Salice, M.; Calafiore, A.; Sgambato, D.; Spuri, G.; Calandrini, L.; Campieri, M.; Rizzello, F.; Gionchetti, P.