TY - RPRT TI - A two-center randomized clinical superiority trial of single-anastomosis sleeve ileal bypass versus sleeve gastrectomy for severe obesity: SASSY study protocol. AU - Helene M Haug AU - Rolf E Hagen AU - Jon A Kristinsson AU - Marius Svanevik AU - Rune Sandbu AU - Asle W Medhus AU - Morten W Fagerland AU - Carl F Schou AU - Tom Mala AU - Torgeir T Søvik PY - 2026 DO - 10.1177/14574969261470903 UR - https://pubmed.ncbi.nlm.nih.gov/42557777/ ID - 42557777 ER -