Ring-Augmented Versus Standard Roux-en-Y Gastric Bypass: A Systematic Review and Meta-Analysis of Randomized Controlled Trials with GRADE Assessment. - Rakab MS; Alkasi AM; Almubadel O; Ahmat OA; Alghofaili SH; Alghamdi MA; Nasser RM; Almutairi AS; Alhujilan SS; Alodhaib NA; Alshehri RS; Al-Shubily R (Obesity surgery, 2026)