Saafan, Amal E, et al. “Prediction of Sofosbuvir Response Using Interleukin-6 Serum Level and Single Nucleotide Polymorphism of Interferon Lambda- 4”. The Journal of Infection in Developing Countries, vol. 14, no. 01, Jan. 2020, pp. 80-88, doi:10.3855/jidc.12013.