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Dehghani, M.R. and Rostamzadeh, A. and Abbasnezhad, A. and Shariati, A. and Nejatisafa, S. and Rezaei, Y. (2020) Fragmented QRS and subclinical left ventricular dysfunction in individuals with preserved ejection fraction: A speckle-tracking echocardiographic study. Journal of Arrhythmia, 36 (2). pp. 335-340.