A. A. M. AL-Obaidy, H. S. AL-Hadithi, and A. S. Mahmood, “The value of serological markers (CA19-9 & CCSA4) in the screening and prognosis of colon cancer”, J Fac Med Baghdad, vol. 59, no. 1, pp. 93–97, Apr. 2017, doi: 10.32007/jfacmedbagdad.591176.