Relationship between the switched memory B level and clinical course of coronavirus disease 2019 in patients with common variable immunodeficiency - Aykan, Filiz Sadi; Çölkesen, Fatih; Yıldız, Eray; Kılınç, Mehmet; Evcen, Recep; Arslan, Şevket (Alergologia Polska - Polish Journal of Allergology, 2024)