Radwan, A., Abdeltawab, A., Onsy, A., Okasha, N. (2020). 'THE RELATION BETWEEN PULMONARY HYPERTENSION MEASURED BY STANDARD TRANSTHORACIC ECHOCARDIOGRAPHY AND T WAVE AND R WAVE ALTERNANS IN ELECTROCARDIOGRAM', Ain Shams Medical Journal, 71(4), pp. 827-839. doi: 10.21608/asmj.2020.148923