1. Department of Chemistry and Pharmacy, Physical Chemistry I and ICMM, Friedrich-Alexander University of Erlangen─Nuremberg, Egerlandstrasse 3, D-91058 Erlangen, Germany
2. Institute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), Friedrich-Alexander University of Erlangen─Nuremberg, IZNF, Cauerstrasse 3, D-91058 Erlangen, Germany
3. Department of Radiation Oncology, Friedrich-Alexander University of Erlangen─Nuremberg, Universitaetsstrasse 27, D-91054 Erlangen, Germany
4. Institute of Anatomy and Cell Biology, Chair of Anatomy I, Friedrich-Alexander University of Erlangen─Nuremberg, Krankenhausstrasse 9, D-91054 Erlangen, Germany