simultaneous doppler ultrasound examination of the left ventricular inflow , m-mode echocardiograms and phonocardiograms were performed in 17 children and young adults : 10 with hypertrophic cardiomyopathy ( aged 6 to 20 years ) and 7 with a normal heart ( aged 10 to 18 years ) .
C0007194
hypertrophic cardiomyopathy
C0018787
heart