Harjanti, D. A., Krisnuhoni, E. and Cornain, S. (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), pp. 28–33. doi: 10.24871/121201128-33.