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Virk SJ, Anfilogoff NH, Lawson N, Sadler AM, Smith SJ, Nuttall A, Murray RG, Littler WA, Davies MK.Virk SJ, et al. Among authors: murray rg.Eur Heart J. 1989 Mar;10(3):227-34. doi: 10.1093/oxfordjournals.eurheartj.a059470.Eur Heart J. 1989.PMID: 2565233