Safarirad M, Ganji AA, Nazari F, Yazdani R, Abolhassani H, Vosughi Motlagh A. Transient increased immunoglobulin levels in a hyper-IgM syndrome patient with COVID-19 infection. Allergol Immunopathol. 2021;49(6):63-66. doi:10.15586/aei.v49i6.92