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Krawitt EL, Gordon SR, Grace ND, Ashikaga T, Ray MA, Palmer M, Yarze JC, Moskowitz S; New York New England Study Team.Krawitt EL, et al.Am J Gastroenterol. 2006 Jun;101(6):1268-73. doi: 10.1111/j.1572-0241.2006.00614.x.Am J Gastroenterol. 2006.PMID: 16771948Clinical Trial.