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Raymond I, Pedersen F, Steensgaard-Hansen F, Green A, Busch-Sorensen M, Tuxen C, Appel J, Jacobsen J, Atar D, Hildebrandt P.Raymond I, et al.Heart. 2003 Dec;89(12):1422-9. doi: 10.1136/heart.89.12.1422.Heart. 2003.PMID: 14617553Free PMC article.