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Leibundgut G, Rohner A, Grize L, Bernheim A, Kessel-Schaefer A, Bremerich J, Zellweger M, Buser P, Handke M.Leibundgut G, et al. Among authors: buser p.J Am Soc Echocardiogr. 2010 Feb;23(2):116-26. doi: 10.1016/j.echo.2009.11.016.J Am Soc Echocardiogr. 2010.PMID: 20152692