G. . E., Ömer ÖZÜTEMİZ, U. S. . A., M. . Y., Z. K., and Y. . B., “Gallbladder wall thickening as a sign of esophageal varices in chronic liver disease*”, T. J. Gastroenterology, vol. 10, no. 1, pp. 15–18, Jul. 2019.