1. Department of Tumor Immunology, Nijmegen Center for Molecular Life Sciences, University Medical Center Nijmegen, 6500 HB Nijmegen, Netherlands
2. Department of Virology, University Medical Center Utrecht, 3508 GA Utrecht, Netherlands
3. Applied Optics Group, Department of Science and Technology, Molecular Engineering Sensors and Actuators Research Institute for Nanotechnology, University of Twente, 7500 AE Enschede, Netherlands
4. Department of Cell Biology, Nijmegen Center for Molecular Life Sciences, University Medical Center Nijmegen, 6500 HB Nijmegen, Netherlands
5. Department of Medical Biochemistry, Nijmegen Center for Molecular Life Sciences, University Medical Center Nijmegen, 6500 HB Nijmegen, Netherlands