1 Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria.
2 Department of Neurology, Medical Faculty Mannheim, Mannheim Center for Translational Neurosciences (MCTN), University of Heidelberg, Mannheim, Germany.
3 Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany.
4 Leeds Institute of Medical Research at St James's, The University of Leeds, Leeds, UK.