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Schoenenberger AW, Schoenenberger-Berzins R, der Maur CA, Suter PM, Vergopoulos A, Erne P.Schoenenberger AW, et al.Clin Res Cardiol. 2012 Mar;101(3):159-64. doi: 10.1007/s00392-011-0376-2. Epub 2011 Nov 5.Clin Res Cardiol. 2012.PMID: 22057652Free article.Clinical Trial.