Efficacy of Erector Spinae Block on Postoperative Outcomes in Bariatric Surgery Patients: A Systematic Review, Meta-Regression, and Trial-Sequential Analysis of Randomized Controlled Trials. - Voznyy V; Abu Al-Burak S; Subramani Y; Elganga M; Iansavitchene A; Fochesato LA; Singh P; Williams H; Harle C; Nagappa M (Obesity surgery, 2026)