Wiryawan, I.N. et al. 2026. Impact of Cardiac Contractility Modulation on Left Ventricular Ejection Fraction and Clinical Outcomes in Heart Failure: A Systematic Review and Meta-Analysis. Indonesian Journal of Cardiology. 47, 2 (June 2026), 154–167. DOI:https://doi.org/10.30701/ijc.2182.