B. Al-Ghamdi, A. Shafquat, and Y. Mallawi, “Cardiac Contractility Modulation Device and Subcutaneous Implantable Cardioverter Defibrillator Combination: A New Hope for Heart Failure Patients with Low Ejection Fraction and Narrow QRS Complex”, J Cardiovasc Med Cardiol, vol. 3, no. 1, pp. 018–022, May 2016.