Abid, S. G., and R. S. Aboud. “The Relationship Between Infertility and Infection With Clarithromycin Resistant Strain of Helicobacter Pylori in Iraq”. Iraqi Journal of Science, Vol. 61, no. 8, Aug. 2020, pp. 1874-9, doi:10.24996/ijs.2020.61.8.3.