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Rugg-Gunn FJ, Symms MR.Rugg-Gunn FJ, et al.Neuroimaging Clin N Am. 2004 Aug;14(3):449-70, viii. doi: 10.1016/j.nic.2004.04.007.Neuroimaging Clin N Am. 2004.PMID: 15324858Review.