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Benavente O, Hart RG.Benavente O, et al. Among authors: hart rg.J Neurol Sci. 1997 Dec 9;153(1):110; author reply 112.J Neurol Sci. 1997.PMID: 9455988No abstract available.
van Walraven C, Hart RG, Singer DE, Laupacis A, Connolly S, Petersen P, Koudstaal PJ, Chang Y, Hellemons B.van Walraven C, et al. Among authors: hart rg.JAMA. 2002 Nov 20;288(19):2441-8. doi: 10.1001/jama.288.19.2441.JAMA. 2002.PMID: 12435257