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Newton KM, LaCroix AZ, McKnight B, Knopp RH, Siscovick DS, Heckbert SR, Weiss NS.Newton KM, et al. Among authors: heckbert sr.Am J Epidemiol. 1997 Feb 1;145(3):269-77. doi: 10.1093/oxfordjournals.aje.a009100.Am J Epidemiol. 1997.PMID: 9012600