1. Department of Dermatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
2. Department of Dermatology, Center of Pediatric Dermatology, Sophia Children’s Hospital, Erasmus MC University Medical Center Rotterdam-Sophia Children’s Hospital, Rotterdam, The Netherlands
3. Department of General Practice, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
4. Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands