[Echocardiographic features of the heart valves (author's transl)].
D001021:Aortic Valve / Q000502:physiology; D004452:Echocardiography; D006349:Heart Valve Diseases / Q000175:diagnosis; D006351:Heart Valves / Q000502:physiology*; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000502:physiology; D011664:Pulmonary Valve / Q000502:physiology; D014261:Tricuspid Valve / Q000502:physiology