Altaf, B., A. Rehman, S. Jawed, and A. Raouf. “Association of Liver Biomarkers and Cytokeratin-18 in Nonalcoholic Fatty Liver Disease Patients: Nonalcoholic Fatty Liver Disease”. Pakistan Journal of Medical Sciences, Vol. 36, no. 3, Mar. 2020, doi:10.12669/pjms.36.3.1674.