1. Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zürich, Switzerland
2. Center for Radiopharmaceutical Sciences, Division of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
3. Ludwig Boltzmann Institute Applied Diagnostics, General Hospital of Vienna, 1090 Vienna, Austria
4. Department of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
5. Department of Biomedical Imaging and Image Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria