Al-Ghurabei, B.H. 2011. Role of Salivary Tumor Necrosis Factor-alpha and Immunoglobulin- A in Recurrent Aphthous Stomatitis. مجلة كلية الطب. 53, 2 (2011), 207–210. DOI:https://doi.org/10.32007/jfacmedbagdad.532876.