Clinical outcome after particle therapy for meningiomas of the skull base: toxicity and local control in patients treated with active rasterscanning - El-Shafie, Rami; Eitz, Kerstin Anne; Habermehl, Daniel; Kronsteiner, Dorothea; Rieken, Stefan; Bougatf, Nina; Jäkel, Oliver; Debus, Jürgen; Combs, Stephanie (BioMed Central, 2018)