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Bergstra A, Svilaas T, van Veldhuisen DJ, van den Heuvel AF, van der Horst IC, Zijlstra F.Bergstra A, et al. Among authors: zijlstra f.Neth Heart J. 2007;15(3):95-9. doi: 10.1007/BF03085962.Neth Heart J. 2007.PMID: 17612667Free PMC article.
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