Heidari, A. et al. 2020. Hemorrhagic pericardial effusion leading to cardiac tamponade, as presenting feature of COVID-19 in a young man: a case report. Acta Biomedica Atenei Parmensis. 91, 4 (Nov. 2020), e2020146. DOI:https://doi.org/10.23750/abm.v91i4.10183.