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Mueller, C., Waldburger, N., Stampfl, U., Kauczor, H.-U., Schirmacher, P., Sommer, C. M., & Longerich, T. (2017). Non-invasive diagnosis of hepatocellular carcinoma revisited. Gut, 67(5), 991–993. doi:10.1136/gutjnl-2017-314981 
10.1136/gutjnl-2017-314981