FREQUENCY OF DETACHED CARDIAC DRUGS PRESCRIBING IN PATIENTS OF DIFFERENT CLASSES QRS COMPLEX DURATION ON THE PERMANENT PACING BACKGROUND. J. V. N. Karazin Khark. Nat. Univ., Ser. Med. 2015;(27):33-37. дата звернення Жовтень 25, 2026. https://periodicals.karazin.ua/medicine/article/view/3429