1. Department of Nanobiotechnology,
Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences, Muthgasse 11, 1190 Vienna, Austria
2. Department of Biomedical
Imaging and Image-guided Therapy, Division of Molecular and Gender
Imaging, Medical University Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
3. Department of Neurosurgery, University of Erlangen-Nürnberg, Schwabachanlage 6, 91054 Erlangen, Germany