“Elevated Levels of Sialic Acid and Lipid-Associated Sialic Acid in Plasma of Rheumatoid Arthritis Patients”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 23, no. 1, May 2017, pp. 189-98, https://jih.uobaghdad.edu.iq/index.php/j/article/view/977.