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Geisberg CA, Abdallah WM, da Silva M, Silverstein C, Smith HM, Abramson V, Mayer I, Means-Powell J, Freehardt D, White B, Lenihan D, Sawyer DB.Geisberg CA, et al.J Card Fail. 2013 Jan;19(1):10-5. doi: 10.1016/j.cardfail.2012.11.006.J Card Fail. 2013.PMID: 23273589Free PMC article.