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Hussain KB, Fontana RJ, Moyer CA, Su GL, Sneed-Pee N, Lok AS.Hussain KB, et al. Among authors: fontana rj.Am J Gastroenterol. 2001 Sep;96(9):2737-44. doi: 10.1111/j.1572-0241.2001.04133.x.Am J Gastroenterol. 2001.PMID: 11569704Free article.