Affiliation: | 1. Department of Dermatology and Venereology, Pediatric Dermatology Unit, Erasmus MC‐Sophia Children's Hospital, Rotterdam, The Netherlands,;2. Department of Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands,;3. Department of Pathology, Erasmus MC, Rotterdam, The Netherlands,;4. Department of Dermatology, Leyenburg Hospital, Den Haag, The Netherlands, |