Barbero, U. (2012). EXERCISE STRESS ECHOCARDIOGRAPHY WITH TISSUE DOPPLER IMAGING (TDI) DETECTS EARLY SYSTOLIC DYSFUNCTION IN BETA-THALASSEMIA MAJOR PATIENTS WITHOUT CARDIAC IRON OVERLOAD. Mediterranean Journal of Hematology and Infectious Diseases, 4(1), e2012037. https://doi.org/10.4084/mjhid.2012.037