KamelA. M., FaridS. F., AttiaA. S., and El. RazikyM. “Association of Vitamin D Binding Protein Polymorphisms With Response to Therapy in Egyptian Chronic Hepatitis C Patients”. The Journal of Infection in Developing Countries, Vol. 11, no. 10, Oct. 2017, pp. 781-90, doi:10.3855/jidc.8830.