K. A. Al-Khazraji and E. S. AL- Obeidy, “Evaluation of T- Helper (Th-1) Cytokines during the Treatment Responses of chronic Hepatitis C Virus”, J Fac Med Baghdad, vol. 50, no. 4, pp. 464–466, Jan. 2009, doi: 10.32007/jfacmedbagdad.5041231.