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Wardlaw JM, Chappell FM, Best JJ, Wartolowska K, Berry E; NHS Research and Development Health Technology Assessment Carotid Stenosis Imaging Group.Wardlaw JM, et al.Lancet. 2006 May 6;367(9521):1503-12. doi: 10.1016/S0140-6736(06)68650-9.Lancet. 2006.PMID: 16679163Review.