Waleed Aziz, Z., S. Hashim Saleem, and H. Abdulmajeed Al-Nuaimy. “Helicobacter Pylori in Gastric Biopsy: A Histochemical and Immunohistochemical Assessment”. Annals of the College of Medicine, Mosul, vol. 41, no. 2, Dec. 2019, pp. 139-47, doi:10.33899/mmed.2020.164156.