1. Department of Neuroscience, Developmental Genetics Unit, Uppsala University, Uppsala, Sweden
2. Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
3. Institute for Immunology, University of Technology Dresden, Dresden, Germany
4. Department of Dermatology, University of Luebeck, Luebeck, Germany
5. Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden