1. Radionuclide Center, Radiology and Nuclear medicine Amsterdam UMC VU University De Boelelaan 1085c 1081 HV Amsterdam the Netherlands
2. Department of Chemistry Johannes Gutenberg University Mainz Duesbergweg 10–14 55128 Mainz Germany
3. Institute of Immunology University Medical Center Mainz Langenbeckstr. 1 55131 Mainz Germany