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. 2012 Nov 14;35(12):2424–2425. doi: 10.2337/dc12-1351

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© 2012 by the American Diabetes Association.

Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. See http://creativecommons.org/licenses/by-nc-nd/3.0/ for details.

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Diagrams of bariatric operations. Shading indicates contact of food with the gut wall. The top line indicates the three operations in the SOS study: gastric banding (GB), vertical banded gastroplasty (VBG), and RYGB. The lower line illustrates the four commonly performed procedures today: adjustable gastric banding (AGB), RYGB, gastric sleeve (GS), and biliopancreatic bypass with duodenal switch (DS). The limb lengths are schematic; current alimentary limb lengths are 100–150 cm in the RYGB, whereas the biliopancreatic bypass with duodenal switch excludes most of the small bowel to a short common channel 100 cm proximal to the ileocecal junction.