1. Division of Biological Physics, Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden
2. Mucosal Immunobiology and Vaccine Center (MIVAC), Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, 405 30 Gothenburg, Sweden
3. Department of Chemistry, BMC, Uppsala University, Box 599, 752 37 Uppsala, Sweden
4. Department of Pharmacy, Uppsala University, Box 580, 751 23, Uppsala, Sweden
5. Section of Virology, Department of Clinical Microbiology, Umeå University, 901 85 Umeå, Sweden
6. Wallenberg Centre for Molecular Medicine, Umeå University, 901 85 Umeå, Sweden