O. S. Nikonenko, A. O. Nikonenko, K. O. Chmul, and V. V. Osaulenko, “Algorithm of Differentiated Approach to the Treatment of CHD Patients with Impaired Homocysteine and Vitamin D Metabolism before and after Coronary Artery Bypass Grafting”, ujcvs, no. 2 (39), pp. 22-28, Mar. 2020.