3889965 EchoCG echocardiography 95 3889967 EchoCG echocardiographic 8 3889966 ECHO-CG echocardiogram 2 3889969 EchoCG ECG Holter monitoring, and echocardiography 1 3889968 EchoCG echo doppler cardiography 1 3889970 EchoCG Echocardiographic study 1 3889971 EchoCG echocardiological study 1 3889972 EchoCG electrocardiography, Dopplerechocardiography 1