Effectiveness of upadacitinib in ulcerative colitis patients with prior tofacitinib exposure: a systematic review and meta-analysis. - Hasan F; Liaquat A; Raza A; Nadeem ZA; Farooqi F; Ali H; Dahiya DS; Issa Z; Pinnam BSM; Alsakarneh S; Mohamad I; Kocchar GS (Annals of gastroenterology, 2025)