“Studying and Improving Treatment of Calprotectin, Helicobacter Pylori and Interleukin-6 in Blood of Patients With Covid-19”. Journal of Pharmaceutical Negative Results (November 23, 2022): 2387–2393. Accessed June 19, 2026. https://www.pnrjournal.com/index.php/home/article/view/3805.