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Patel N, Singal AG.Patel N, et al. Among authors: singal ag.Gastroenterology. 2012 Oct;143(4):1113-4. doi: 10.1053/j.gastro.2012.08.016. Epub 2012 Aug 20.Gastroenterology. 2012.PMID: 22917865No abstract available.