Regorafenib in advanced high-grade glioma: a retrospective bicentric analysis. Issue 7 (23rd April 2019) - Tzaridis, Theophilos; Gepfner-Tuma, Irina; Hirsch, Sophie; Skardelly, Marco; Bender, Benjamin; Paulsen, Frank; Schaub, Christina; Weller, Johannes; Schäfer, Niklas; Herrlinger, Ulrich; Tabatabai, Ghazaleh