“The Role of Serum Type IV Collagen and Serum Procollagen Type III (PIIINP) As Biomarkers for the Detection and Staging of Liver Fibrosis in a Sample of Iraqi Patients With Chronic Liver Disease”. 2022. Journal of Pharmaceutical Negative Results 13 (4): 93-99. https://doi.org/10.47750/pnr.2022.13.04.011.