B. . Nzhad Mustafa and A. . 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 ”, djm, vol. 19, no. 2, pp. 107–117, Dec. 2020.