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Zamora J, Abraira V, Muriel A, Khan K, Coomarasamy A.Zamora J, et al. Among authors: khan k.BMC Med Res Methodol. 2006 Jul 12;6:31. doi: 10.1186/1471-2288-6-31.BMC Med Res Methodol. 2006.PMID: 16836745Free PMC article.
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