Cheng, Nan, Changqing Gao, Rong Wang, Ming Yang, and Lin Zhang. “New-Onset Ventricular Arrhythmias in Patients With Left Ventricular Dysfunction After Coronary Surgery: Incidence, Risk Factors, and Prognosis”. The Heart Surgery Forum 21, no. 2 (March 26, 2018): E117-E123. Accessed August 9, 2020. https://journal.hsforum.com/index.php/HSF/article/view/1944.