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3. 3) Nguyen PT, Scheinman MM, Seger J, et al: Polymorphos ventricular tachycardia: clinical characterization, therapy, and the QT interval. Circulation. 1986; 74: 340-9.
4. 4) Zipes DP, Camm AJ, Borggrefe M, et al: ACC/AHA/ESC 2006 Guidelines for Management of Patients With Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death-Executive Summary A Report of the American College of Cardiology / American Heart Association Task Force and the European Society of Cardiology Committee for Practice Guidelines (Writing Committee to Develop Guidelines for Management of Patients With Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death). J Am Coll Cardiol. 2006; 48: 1064-108.
5. Sudden cardiac death and polymorphous ventricular tachycardia in pationts with normal QT intervals and normal systolic cardiac function