, "Echocardiography versus right heart cathetrization in class I pulmonary hypertension", Egyptian journal of chest diseases and tuberculosis, vol. 63, issue 2, pp. 419-422, 2014.
, "right ventricular diastolic dysfunction in asthmatic patients ", Egyptian journal of chest diseases and tuberculosis, vol. 63, issue 1, pp. 29-32, 2014.