Comparison of the long-term results of Roux-en-Y gastric bypass and sleeve gastrectomy for morbid obesity: a systematic review and meta-analysis of randomized and nonrandomized trials.
Comparison of the long-term results of Roux-en-Y gastric bypass and Sleeve Gystocectomy for morbid obesity : a systematic review and meta-analysis of randomized and nonrandomized trials.