1. Institute for Experimental Molecular Imaging, University Clinic, RWTH Aachen University, Forckenbeckstraße
55, 52074 Aachen, Germany
2. Fraunhofer Institute for Digital Medicine MEVIS, Max-von-Laue-Str. 2,
28359 Bremen, Germany
3. Institute of Organic Chemistry, RWTH Aachen University, Landoltweg
1, 52074 Aachen, Germany