Highly effective treatment of skull base chordoma with carbon ion irradiation using a raster scan technique in 155 patients: first long-term results - Uhl, Matthias; Haberer, Thomas; Herfarth, Klaus; Debus, Jürgen; Mattke, Matthias; Welzel, Thomas; Röder, Falk; Oelmann-Avendano, Jan Tobias; Habl, Gregor; Jensen, Alexandra; Ellerbrock, Malte; Jäkel, Oliver (Cancer, 2014)