OC.02.3 SEQUENTIAL THERAPY IN THE MANAGEMENT OF MODERATE-TOSEVERE ULCERATIVE COLITIS: MARKOVIAN MODELS TO GUIDE TREATMENT CHOICES. (May 2022) - Busacca, A.; Sinagra, E.; Battaglia, S.; Celsa, C.; Carrozza, L.; Muscarella, S.; Crispino, F.; Brinch, D.; Guida, L.; Camma, C.; Cappello, M.