High expression of the BMP-9 receptor ALK1 in hepatocellular carcinoma (HCC) tissue indicates a better prognosis - Breitkopf-Heinlein, K; Araos Henriquez, J; Ahmadova, Z; Sitar, M N; Rana-Seyfert, D; Gaitantzi, H; Reissfelder, C (Zeitschrift für Gastroenterologie, 2025)