Mousa, Hussein, and Saif Saliem. “Assessment of Alkaline Phosphatase, Salivary Flow Rate and Salivary Potential of Hydrogen in Relation to Severity of Chronic Periodontitis”. Journal of Baghdad College of Dentistry 28, no. 3 (September 14, 2016): 126-131. Accessed November 20, 2019. http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/1438.