Vu M, Ghosh S, Umashankar K, Weber L, Landis C, Candela N, Chastek B. Comparison of surgery rates in biologic-na?ve patients with Crohn's disease treated with vedolizumab or ustekinumab: findings from SOJOURN. BMC Gastroenterol. 2023 Mar 25; 23(1):87.