Al-Essa H, Zaidan T. Assessment of serum and salivary oxidant and total antioxidant status of patients with recurrent aphthous stomatitis in a sample of Basrah city. J Bagh Coll Dent [Internet]. 1 [cited 27Nov.2019];25(Special Is):83-8. Available from: http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/204