Effect of laparoscopic sleeve gastrectomy vs laparoscopic Roux-en-Y gastric bypass on weight loss in patients with morbid obesity. The SM-BOSS randomized clinical trial. JAMA 2018; 319: 255-265.

Published: 5th April 2018

Authors: Peterli R, Wölnerhanssen BK, Peters T, Vetter D, Kröll D , Borbély Y et al.


This study that included 240 patients did not demonstrate equivalence of percentage weight loss between laparoscopic sleeve gastrectomy (49 per cent) and laparoscopic gastric bypass (57per cent) after five years.

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