20. Has electrocardiogram (ECG) with clinically significant findings, or features that would interfere with the assessment of myocarditis/pericarditis. Including any of the following: -Conduction disturbance (complete left or complete right bundle branch block or nonspecific intraventricular conduction disturbance with QRS = / >120 ms, PR interval >219 ms, any second-or third-degree atrioventricular block, or prolongation of the QT interval corrected according to Bazett's formula [QTcB] [>450 ms]) -Significant repolarization (ST-segment or T-wave) abnormality. -Significant atrial or ventricular arrhythmia; frequent atrial or ventricular ectopy (e.g., frequent premature atrial contractions, 2 premature ventricular contractions in a row). -ST-elevation consistent with ischemia or evidence of past or evolving myocardial infarction.