1. Institute of Complex Systems, Structural Biochemistry (ICS-6), Forschungszentrum Jülich GmbH, Jülich, Germany
2. Institute of Neuroscience and Medicine, Medical Imaging Physics (INM-4), Forschungszentrum Jülich GmbH, Jülich, Germany
3. Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
4. Department of Neurology, Faculty of Medicine, JARA, RWTH Aachen University, Aachen, Germany
5. Department of Nuclear Medicine, Universitätsklinikum der RWTH Aachen, Aachen, Germany