Sungkar, Iqbal, Leonardo Basa Dairi, and Gontar Alamsyah Siregar. “Correlation Between Esophageal Varices and Lok Score As a Non-Invasive Parameter in Liver Cirrhosis Patients”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 17, no. 2 (February 20, 2017): 83–87. Accessed October 2, 2026. https://www.ina-jghe.com/index.php/jghe/article/view/531.