Zhyvago, Kh. S. “Predisposition to Depressive Symptoms in Patients With Paranoid Schizophrenia: Constitutional-Biological, Socio-Demographic Factors and the Debut of the Disease”. Zaporozhye Medical Journal 18, no. 6 (December 8, 2016). Accessed May 2, 2024. http://zmj.zsmu.edu.ua/article/view/85530.