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Marrero JA, Lok AS.Marrero JA, et al. Among authors: lok as.Gastroenterology. 2004 Nov;127(5 Suppl 1):S113-9. doi: 10.1053/j.gastro.2004.09.024.Gastroenterology. 2004.PMID: 15508074Review.
Wai CT, Lok AS.Wai CT, et al. Among authors: lok as.J Gastroenterol. 2002;37(10):771-8. doi: 10.1007/s005350200129.J Gastroenterol. 2002.PMID: 12424559Free article.Review.
Marrero JA, Lok AS.Marrero JA, et al. Among authors: lok as.Gastroenterology. 2004 Jan;126(1):347-50. doi: 10.1053/j.gastro.2003.11.021.Gastroenterology. 2004.PMID: 14699513Review.No abstract available.