1. Department of Dermatology; UZ Leuven; University of Leuven; Leuven Belgium
2. Department of Microbiology and Immunology; KU Leuven; University of Leuven; Leuven Belgium
3. Department of Dermatology; University Medical Center Groningen; University of Groningen; Groningen the Netherlands
4. Department of Public Health and Primary Care; University of Leuven; Leuven Belgium
5. Department of Pediatrics; UZ and KU Leuven; University of Leuven; Leuven Belgium