Harjanti, Dyonesia Ary, Ening Krisnuhoni, and Santoso Cornain. 2011. “Cytokeratin 7 and Cytokeratin 19 Expressions in Oval Cells and Mature Cholangiocytes As Diagnostic and Prognostic Factors of Cholestasis”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 12 (1):28-33. https://doi.org/10.24871/121201128-33.