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Gregg RE, Fiol-Sala M, Nikus KC, Startt-Selvester R, Zhou SH, Carrillo A, Barbara V, Chien CH, Lindauer JM.Gregg RE, et al.J Electrocardiol. 2012 Jul-Aug;45(4):343-9. doi: 10.1016/j.jelectrocard.2012.03.008.J Electrocardiol. 2012.PMID: 22912955