Ghezelbash B, Rostami M, Heidarvand M, Mafi A, Chegni H, Eskandari N. Correlation of Expression of MMP-2, ACE2, and TMPRSS2 Genes with Lymphopenia for Mild and Severity of COVID-19. Iran J Allergy Asthma Immunol. 2023;22(1):91-98.