THE INFLUENCE OF ENALAPRIL MALEAT AND METOPROLOL TREATMENT ON HEMODYNAMICS AND HEART RATE VARIABILITY INDECES AMONG PATIENTS WITH CHRONIC HEART FAILURE IN DIFFERENT AGES GROUP. J. V. N. Karazin Khark. Nat. Univ., Ser. Med. [Internet]. 2015 Jul. 4 [cited 2026 Nov. 14];(6):44-9. Available from: https://periodicals.karazin.ua/medicine/article/view/7296