Abdulla, Wasan L, Batool H A-Ghurabi, and Khalid H Gathwan. 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): 165-70. https://doi.org/10.0001/1165.