Rahman, L. Q., A. Q. Rahman, A. A. Bakir, R. A. Muhamadamin, and P. K. Khudhur. “DNA Detection of Helicobacter Pylori in Saliva of Patients With Low Salivary PH”. Zanco Journal of Medical Sciences (Zanco J Med Sci), vol. 24, no. 2, Aug. 2020, pp. 283-90, doi:10.15218/zjms.2020.032.