S. KAPICIOĞLU, et al. “EFFECTS OF HYOSCTNE-N-BUTYLBUROMIDE AND RANITIDINE ON PORTAL VENOUS VELOCITY IN CIRRHOTIC PATIENTS: A PLASEBO CONTROLLED TRIAL”. Turkish Journal of Gastroenterology, vol. 3, no. 2, Apr. 2020, pp. 215-8, https://tjg.avesjournals.com/index.php/tjg/article/view/89.