1. 1Institute of Zoology, University of Cologne, Cologne, Germany
2. 2Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
3. 3Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Aachen, Germany
4. 4Gremse-IT GmbH, Aachen, Germany