“Activity of The Enzymes: Alkaline Phosphatase, 5-Nucleotidase and Acetylcholine Esterase in The Blood and Synovial Fluid for Some Rheumatoid Arthritis Patients”. Rafidain Journal of Science, vol. 19, no. 4, Aug. 2008, pp. 26-36, https://doi.org/10.33899/rjs.2008.41560.