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Vergouwe Y, Moons KG, Steyerberg EW.Vergouwe Y, et al. Among authors: moons kg.Am J Epidemiol. 2010 Oct 15;172(8):971-80. doi: 10.1093/aje/kwq223. Epub 2010 Aug 31.Am J Epidemiol. 2010.PMID: 20807737Free PMC article.