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Bayman EO, Chaloner KM, Hindman BJ, Todd MM; IHAST Investigators.Bayman EO, et al.BMC Med Res Methodol. 2013 Jan 16;13:5. doi: 10.1186/1471-2288-13-5.BMC Med Res Methodol. 2013.PMID: 23324207Free PMC article.Clinical Trial.