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Markowitz JE, Liacouras CA.Markowitz JE, et al. Among authors: liacouras ca.Gastroenterol Clin North Am. 2003 Sep;32(3):949-66. doi: 10.1016/s0889-8553(03)00047-5.Gastroenterol Clin North Am. 2003.PMID: 14562583Review.