Shikova, E., Marteva-Proevska, Y., Mondeshki, T., Bilyukov, R., Marinova, D., & Naumova, E. (2023). Virus-specific humoral immune response in Bulgarian COVID-19 patients with varying disease severity. The Journal of Infection in Developing Countries, 17(12), 1674–1681. https://doi.org/10.3855/jidc.18274