Natzkova J, Stoyanova V. Assessment of the Subjectively Perceived Cognitive Deficit in Hospitalized Elderly Patients with Depression and the Relationship of Perceived Deficit Questionnaire – PDQ-D5 with the Socio-demographic and Clinical Factors. C. R. Acad. Bulg. Sci. [Internet]. 2023 Feb. 26 [cited 2023 Mar. 24];76(2):292-301. Available from: https://proceedings.bas.bg/index.php/cr/article/view/260