Maintenance treatment with azathioprine in ulcerative colitis: outcome and predictive factors after drug withdrawal. by Cassinotti, A, Actis, G, Duca, P, Massari, A, Colombo, E, Gai, E, Annese, V, D'Albasio, G, Manes, G, Travis, S, Porro, G, Ardizzone, S

IBD care in Europe: A comparative audit of the inpatient management of Crohn's disease and ulcerative colitis using the national UK IBD audit tool. by Cassinotti, A, Keshav, S, Ardizzone, S, Mortensen, N, Sampietro, G, Fociani, P, Duca, P, George, B, Lazzaroni, M, Manes, G, Warren, B, Foschi, D, Vago, G, Porro, G, Travis, S