1. Department of Dermatology, Karolinska Hospital, Stockholm, Sweden
2. Department of Clinical Immunology, Huddinge Hospital, Huddinge, Sweden
3. Departments of Pediatric
4. Dermatology, University Hospital, Uppsala, Sweden
5. Department of Clinical Microbiology, National University Hospital (Rigshospitalet Afsnit 7806), Copenhagen, Denmark
6. Department of Clinical Immunology, University of Umeå, Umeå, Sweden
7. Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden