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Laing CM, Roberts R, Lightstone L, Graham A, Cook TH, Summers S, Pusey CD.Laing CM, et al.BMJ. 2007 Jul 28;335(7612):205-6; discussion 206-8. doi: 10.1136/bmj.39239.479560.80.BMJ. 2007.PMID: 17656546Free PMC article.Review.No abstract available.