Left Ventricular Regional Function in Children with Beta Thalassemia with No Cardiac Manifestations (Four-Dimensional Echocardiographic Study). - El Razaky OA; El-Shanshory MR; El-Shehaby WA; Hables NM; Elshamia AM; Fayed AM; El-Kholy AE; El-Dosoky EA (Indian journal of hematology & blood transfusion : an official journal of Indian Society of Hematology and Blood Transfusion, 2019)