A. R. . Abdullah, S. Y. . abdulfattah, F. T. . Abdullah, A. T. . Abid, and H. B. . Salah, “Increasing serum level of transforming growth factor beta 2 (TGF-β) in patients with colorectal and gastric cancer in Iraq”, JOBRC, vol. 7, no. 1, pp. 72–79, Jan. 2013.