The VITRO Score (Von Willebrand Factor Antigen/Thrombocyte Ratio) as a New Marker for Clinically Significant Portal Hypertension in Comparison to Other Non-Invasive Parameters of F... oleh Stephanie Hametner, Arnulf Ferlitsch, Monika Ferlitsch, Alexandra Etschmaier, Rainer Schöfl, Alexander Ziachehabi, Andreas Maieron