Vatutin, N. T., KhrystychenkoМ. А., and E. V. Keting. “QUALITY OF LIFE IN PATIENTS WITH CHRONIC HEART FAILURE OF ISCHEMIC ETIOLOGY: ROLE OF ANXIETY AND DEPRESSIVE DISORDERS”. The Journal of V. N. Karazin Kharkiv National University, Series "Medicine", no. 26, July 2015, pp. 46-52, https://periodicals.karazin.ua/medicine/article/view/3413.