Syvolap, V.D., Zemlyaniy, Y.V. and Nazarenko, E.V. 2016. Myocardial electrical activity according to daily ECG monitoring in patients with heart failure with preserved ejection fraction and asymptomatic diastolic dysfunction. Zaporozhye мedical journal. 18, 1 (Mar. 2016). DOI:https://doi.org/10.14739/2310-1210.2016.1.64160.