Nzhad Mustafa, Bero, and Ali Fakhree Alzubaidee. “Comparative Evaluation of The Efficacy of Topical Hyaluronic Acid ( 0.2%) and Topical Triamcinolone Acetonide( 0.1%) in The Treatment of Recurrent Aphthous Stomatitis ”. Diyala Journal of Medicine, vol. 19, no. 2, Dec. 2020, pp. 107-1, https://www.djm.uodiyala.edu.iq/index.php/djm/article/view/651.