I. Supriyanto, S. Suyata, S. B. Rasyad, and F. Bakry, “Correlation between Aspartate Aminotransferase to Platelet Ratio Index Score and the Degree of Esophageal Varices with Liver Cirrhosis”, InaJGHE, vol. 13, no. 3, pp. 141–144, Dec. 2012.