Efficacy of Ustekinumab for Ulcerative Colitis Through 2 Years: Results of the UNIFI Maintenance Study and Long-term Extension - Panaccione, R; Sandborn, W; Sands, B; Marano, C; O´Brien, C; Zhang, H; Johanns, J; Zhou, Y; Peyrin-Biroulet, L; Hisamatsu, T; Danese, S (Zeitschrift für Gastroenterologie, 2020)