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Okumura Y, Watanabe I, Ohkubo K, Ashino S, Kofune M, Hashimoto K, Shindo A, Sugimura H, Nakai T, Kasamaki Y, Saito S.Okumura Y, et al. Among authors: watanabe i.Pacing Clin Electrophysiol. 2007 Mar;30(3):304-13. doi: 10.1111/j.1540-8159.2007.00670.x.Pacing Clin Electrophysiol. 2007.PMID: 17367349Clinical Trial.
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