Abdulla, W. L., A-Ghurabi, B. H. and Gathwan, K.H. (2016) “An Impairment of Salivary Gland Function in Rheumatoid Arthritis: Association with Change in Salivary Biomarkers and Disease Activity”, Journal of Baghdad College of Dentistry, 28(2), pp. 165–170. doi:10.0001/1165.