Ni, Huai Kun, Lian Ming liao, Ruo Lei Huang, and Wenjuan Zhou. “The Relationship Between Gastric Cancer and Helicobacter Pylori Cytotoxin-Related Gene A Genotypes”. Cellular and Molecular Biology 66, no. 7 (October 31, 2020): 1–4. Accessed April 5, 2025. https://cellmolbiol.org/index.php/CMB/article/view/1752.