1. Department Chemistry and Pharmacy, Physical Chemistry I and ICMM, Friedrich-Alexander University of Erlangen-Nuremberg, Egerlandstr. 3, Erlangen D-91058, Germany
2. Department of Chemistry and Pharmacy, Institute of Organic Chemistry II, Friedrich-Alexander University of Erlangen-Nuremberg, Nikolaus-Fiebiger-Str. 10, Erlangen D-91058, Germany
3. Institute of Micro- and Nanostructure Research and Center for Nanoanalysis and Electron Microcopy (CENEM), Friedrich-Alexander University of Erlangen-Nuremberg, Cauerstr. 6, Erlangen D-91058, Germany
4. Department of Radiation Oncology, Friedrich-Alexander University of Erlangen-Nuremberg, Universitätsstr. 27, Erlangen D-91054, Germany
5. Department of Anatomy, Chair of Anatomy I, Friedrich-Alexander University of Erlangen-Nuremberg, Krankenhausstr. 9, Erlangen D-91054, Germany