Comparison of Erector Spinae Plane Block and Intravenous Lidocaine in Opioid-Free Anesthesia for Laparoscopic Sleeve Gastrectomy: A Randomized Controlled Trial. - Maciejewski P; Skladzien T; Tabin L; Cicio M; Lonc T; Szkudlarek O; Klimczyk T; Kwinta A; Dryglaski T; Major P; Terlecki M (Obesity surgery, 2026)