Early Improvement After Intravenous Ustekinumab Induction in Patients With Ulcerative Colitis: Results From the UNIFI Induction Trial: 689. (October 2019) - Sands, Bruce E.; Abreu, Maria T.; Marano, Colleen; Baker, Thomas; O'Brien, Christopher; Zhang, Hongyan; Johanns, Jewel; Rowbotham, David; Leong, Rupert W. L.; Danese, Silvio