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Nguyen GC, Loftus EV Jr, Hirano I, Falck-Ytter Y, Singh S, Sultan S; AGA Institute Clinical Guidelines Committee.Nguyen GC, et al. Among authors: singh s.Gastroenterology. 2017 Jan;152(1):271-275. doi: 10.1053/j.gastro.2016.10.038. Epub 2016 Nov 10.Gastroenterology. 2017.PMID: 27840074Review.No abstract available.