Emre, E., and G. Tazegül. “COVID-19 Infection in a Patient With Common Variable Immunodeficiency: Experience With Favipiravir and Intravenous Immunoglobulin”. Asthma Allergy Immunology, vol. 19, no. 2, Aug. 2021, pp. 118-21, https://aai.org.tr/index.php/aai/article/view/618.