Shop, I. V., Holubkina Ye. О., T. M. Tykhonova, T. A. Derienko, and O. V. Al-Trawneh. “Diagnosis Difficulties in Elderly Patients With Atrial Fibrillation and Complete Atrioventricular Block”. Pathologia 18, no. 3 (December 1, 2021): 365–370. Accessed December 18, 2024. http://pat.zsmu.edu.ua/article/view/243299.