Szyprowski, K. et al. 2026. ENDOCARDIAL INVOLVEMENT IN SYSTEMIC AUTOIMMUNE DISEASES: PATHOPHYSIOLOGY, CLINICAL MANIFESTATIONS, AND MANAGEMENT. International Journal of Innovative Technologies in Social Science. 5, 2(50) (Jun. 2026). DOI:https://doi.org/10.31435/ijitss.2(50).2026.5388.