1. Department of Biomedicine and Surgery, Division of Cell Biology, Linköping University, Linköping, Sweden.
2. Division of Plastic Surgery, Faculty of Health Sciences, Linköping University, Linköping, Sweden.
3. Institute for Virus Research, Kyoto University, Kyoto, Japan.
4. Medical Nobel Institute for Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden.