Mohamed Elsayed Abdelfattah, , Reda Biomy Bastawisy, Hany Mahmoud, Abdel Shakour, and Wael Anwar Haseeb, “Three-dimensional echocardiography as a predictor of positive response to cardiac resynchronization therapy ”, J Pak Med Assoc, vol. 73, no. 4, pp. S87-S91, May 2023.