GPT and Hepatic fibrosis: As the available non-invasive fibrosis markers are not validated as single direct markers in this context and the established fibrosis scores include at least one congestion-sensitive parameter, e.g., AST, ALT and GGT, we used FIB-4 corrected for the effect of mere congestion (e.g., on the AST to ALT ratio) as a surrogate score for hepatic fibrosis and indicator of increased matrix deposition during CA.