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Mechanical dyssynchrony assessed by tissue Doppler imaging is a powerful predictor of mortality in congestive heart failure with normal QRS duration. <i>J Am Coll Cardiol<\/i> 2005; 46: 2237\u20132243.","DOI":"10.1016\/j.jacc.2004.11.074"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4. Das MK, Maskoun W, Shen C, Michael MA, Suradi H, Desai M, et al. Fragmented QRS on twelve-lead electrocardiogram predicts arrhythmic events in patients with ischemic and nonischemic cardiomyopathy. <i>Heart Rhythm<\/i> 2010; 7: 74\u201380.","DOI":"10.1016\/j.hrthm.2009.09.065"},{"key":"5","doi-asserted-by":"crossref","unstructured":"5. Peters S, Trummel M, Koehler B. QRS fragmentation in standard ECG as a diagnostic marker of arrhythmogenic right ventricular dysplasia-cardiomyopathy. <i>Heart Rhythm<\/i> 2008; 5: 1417\u20131421.","DOI":"10.1016\/j.hrthm.2008.07.012"},{"key":"6","doi-asserted-by":"crossref","unstructured":"6. Mancini DM, Wong KL, Simson MB. 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Significance of a fragmented QRS complex versus a Q wave in patients with coronary artery disease. <i>Circulation<\/i> 2006; 113: 2495\u20132501.","DOI":"10.1161\/CIRCULATIONAHA.105.595892"},{"key":"17","doi-asserted-by":"crossref","unstructured":"17. Middlekauff HR, Stevenson WG, Woo MA, Moser DK, Stevenson LW. Comparison of frequency of late potentials in idiopathic dilated cardiomyopathy and ischemic cardiomyopathy with advanced congestive heart failure and their usefulness in predicting sudden death. <i>Am J Cardiol<\/i> 1990; 66: 1113\u20131117.","DOI":"10.1016\/0002-9149(90)90514-2"},{"key":"18","doi-asserted-by":"crossref","unstructured":"18. Turitto G, Ahuja RK, Caref EB, el-Sherif N. 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Korhonen P, Montonen J, Endt P, Makijarvi M, Trahms L, Katila T, et al. Magnetocardiographic intra-QRS fragmentation analysis in the identification of patients with sustained ventricular tachycardia after myocardial infarction. <i>Pacing Clin Electrophysiol<\/i> 2001; 24: 1179\u20131186.","DOI":"10.1046\/j.1460-9592.2001.01179.x"},{"key":"22","doi-asserted-by":"crossref","unstructured":"22. Korhonen P, Husa T, Tierala I, Vaananen H, Makijarvi M, Katila T, et al. Increased intra-QRS fragmentation in magnetocardiography as a predictor of arrhythmic events and mortality in patients with cardiac dysfunction after myocardial infarction. <i>J Cardiovasc Electrophysiol<\/i> 2006; 17: 396\u2013401.","DOI":"10.1111\/j.1540-8167.2005.00332.x"},{"key":"23","doi-asserted-by":"crossref","unstructured":"23. Kandori A, Miyashita T, Ogata K, Shimizu W, Yokokawa M, Kamakura S, et al. Magnetocardiography study on ventricular depolarization-current pattern in patients with brugada syndrome and complete right-bundle branch blocks. <i>Pacing Clin Electrophysiol<\/i> 2006; 29: 1359\u20131367.","DOI":"10.1111\/j.1540-8159.2006.00548.x"},{"key":"24","doi-asserted-by":"crossref","unstructured":"24. Take Y, Morita H. 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