Dermendzhiev, Svetlan, et al. “The Role of SARS-CoV-2 Infection in Patients With Bronchial Asthma and Allergic Rhinitis at Tertiary St. George Hospital Plovdiv, Bulgaria”. The Journal of Infection in Developing Countries, vol. 20, no. 02, Feb. 2026, pp. 148-52, doi:10.3855/jidc.22009.