1. Laboratory of BioNanoTechnology, Wageningen University & Research, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
2. Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
3. Instituto Regional de Investigacion Cientifica Aplicada (IRICA), Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain