Qureshi, M. A. “The Impact of Percutaneous Coronary Intervention on Echocardiographic Parameters in Patients With Chronic Total Occlusion of the Coronary Arteries With Diverse Left Ventricular Ejection Fractions: A Single-Center Retrospective Study”. The Heart Surgery Forum, vol. 28, no. 1, Jan. 2025, pp. E134–E135, doi:10.59958/hsf.8279.