Efficacy and Safety of Induction Therapy With Calcineurin Inhibitors in Combination With Vedolizumab in Patients With Refractory Ulcerative Colitis. Pellet G, Stefanescu C, Carbonnel F, Peyrin-Biroulet L, Roblin X, Allimant C, Nachury M, Nancey S, Filippi J, Altwegg R, Brixi H, Fotsing G, de Rosamel L, Shili S, Laharie D (Clin Gastroenterol Hepatol. 2019 Feb;17(3):494-501 – PMID: 30213584) https://pubmed.ncbi.nlm.nih.gov/30794285/