Radchenko, O., and L. Pylypiv. “Blood Leptin And Psycho-Emotional State In Patients Who Suffer From Chronic Obstructive Pulmonary Disease”. Psychiatry, Neurology and Medical Psychology, Vol. 4, no. 1 (7), Sept. 2017, pp. 96-99, https://periodicals.karazin.ua/pnmp/article/view/9314.