1. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Research Site Leipzig, Department of Neuroradiopharmaceuticals,, Permoserstr. 15, 04318 Leipzig, Germany
2. ABX Advanced Biochemical Compounds GmbH, 01454 Radeberg, Germany
3. Radiopharmacy
and Experimental Nuclear Medicine, Division of Nuclear Medicine, Medical University of Vienna, A-1090 Vienna, Austria