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Desborough JA, Butters P, Bhattacharya D, Holland RC, Wright DJ.Desborough JA, et al. Among authors: bhattacharya d.BMC Med Res Methodol. 2008 Jun 27;8:42. doi: 10.1186/1471-2288-8-42.BMC Med Res Methodol. 2008.PMID: 18588670Free PMC article.Clinical Trial.