1. Supramolecular Chemistry and
Technology, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
2. Division of Diagnostic Oncology, The Netherlands Cancer Institute, Plesmanlaan 121,
1066 CX, Amsterdam, The Netherlands; Interventional Molecular Imaging
Section, Department of Radiology, Leiden University Medical Center,
Leiden, The Netherlands
3. BioNanoTechnology
group, Laboratory
of Physical Chemistry and Colloid Science Wageningen University, Dreijenplein
6, 6703 HB, Wageningen, The Netherlands