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Linhart M, Bellmann B, Mittmann-Braun E, Schrickel JW, Bitzen A, Andrié R, Yang A, Nickenig G, Lickfett L, Lewalter T.Linhart M, et al.J Cardiovasc Electrophysiol. 2009 Dec;20(12):1343-8. doi: 10.1111/j.1540-8167.2009.01560.x.J Cardiovasc Electrophysiol. 2009.PMID: 19656254Clinical Trial.