Olga, Smirnova, and Sinyakov Aleksandr. “Complex Diagnostics of Early Gastric Cancer Associated With Helicobacter Pylori Infection in the Adult Population of Siberia”. Biomedical Research and Therapy 8, no. 12 (December 29, 2021): 4728-4733. Accessed April 19, 2024. http://bmrat.org/index.php/BMRAT/article/view/709.