Boyanova, L., Boyanova, L., Yordanov, D., Gergova, R. and Markovska, R. 2026. Distribution and Evolution of cagA, cagE, and vacA Genes among Helicobacter pylori Isolates in Bulgaria. Proceedings of the Bulgarian Academy of Sciences. 79, 7 (Jul. 2026), 923–930. DOI:https://doi.org/10.7546/CRABS.2026.07.09.