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de Groot-de Laat LE, ten Cate FJ, Vourvouri EC, van Domburg RT, Roelandt JR.de Groot-de Laat LE, et al. Among authors: roelandt jr.Eur J Echocardiogr. 2005 Jun;6(3):196-201. doi: 10.1016/j.euje.2004.09.013. Epub 2004 Dec 18.Eur J Echocardiogr. 2005.PMID: 15894238Clinical Trial.