Transesophageal 3-dimensional echocardiography: in vivo determination of left ventricular mass in comparison with magnetic resonance imaging. - Kuhl,H.P.; Bucker,A.; Franke,A.; Maul,S.; Nolte-Ernsting,C.; Reineke,T.; Hoffmann,R.; Gunther,R.W.; Hanrath,P. (J Am Soc Echocardiogr, 2000)