Role of spleen stiffness measurement by 2D-shear wave elastography in ruling out the presence of high-risk varices in cirrhotic patients - Karagiannakis, Dimitrios S; Voulgaris, Theodoros; Koureta, Evgenia; Chloupi, Elissavet; Papatheodoridis, George V; Vlachogiannakos, John (Digestive Diseases and Sciences, 2019)