1. Feasibility and safety of nivolumab in advanced hepatocellular carcinoma: real-life experience from three German centers
   Fabian Finkelmeier et al, 2019, Journal of Cancer Research and Clinical Oncology CrossRef
2. Update on the Genetics of and Systemic Therapy Options for Combined Hepatocellular Cholangiocarcinoma
   Alexander A. Azizi et al, 2020, Frontiers in Oncology CrossRef