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John A, Robinson DA, Markan S, Nicolosi AC, Pagel PS.John A, et al. Among authors: markan s.J Cardiothorac Vasc Anesth. 2009 Apr;23(2):253-5. doi: 10.1053/j.jvca.2007.09.011. Epub 2007 Nov 26.J Cardiothorac Vasc Anesth. 2009.PMID: 18834768No abstract available.