1. VIB-UGent Center for Medical Biotechnology, Ghent, Belgium
2. Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
3. Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
4. Institute of Virology, Medical Center–University of Freiburg, Freiburg, Germany
5. Faculty of Medicine, University of Freiburg, Freiburg, Germany