Development and validation of the A-TANGO organ failure score for acute-on-chronic liver failure in global cohorts. - Engelmann C; Verma N; Qi T; Kerbert AJC; Pohl J; Morgan C; Kowalski M; Andreola F; Silva MO; Perez Hernandez JL; Palma-Fernandez R; Mendizabal M; et al. (Journal of hepatology, 2026)