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Gloy, V. L.; Briel, M.; Bhatt, D. L.; Kashyap, S. R.; Schauer, P. R.; Mingrone, G.; Bucher, H. C.; Nordmann, A. J. . (2013). Bariatric surgery versus non-surgical treatment for obesity: a systematic review and meta-analysis of randomised controlled trials. BMJ, 347(oct22 1), f5934–f5934. doi:10.1136/bmj.f5934 
10.1136/bmj.f5934