1. Maltseva M.S., Volkov D.E., Lopin D.O., Yabluchansky M.I. FUNCTIONAL PARAMETERS OF BLOOD CIRCULATION IN PATIENTS DURING FIRST SIX MONTHS OF RIGHT VENTRICULAR PACING IN QTc INTERVAL DURATION CLASSES // The Journal of V. N. Karazin Kharkiv National University, series "Medicine". 2015. № 28. C. 17-22.