R. T. Lumban Tobing, Suyata, and Mgs. Irsan Saleh, “Correlation of Platelet-Derived Growth Factor-BB Levels as a Biomarker of Liver Fibrosis with the Degree of Fibrosis Based on Fibroscan in Chronic Hepatitis B Patients”, Bioscmed, vol. 8, no. 1, pp. 3917-3922, Dec. 2023.