1. Department of Dermatology and Venerology Oslo University Hospital Oslo Norway
2. University of Oslo Faculty of Medicine Institute of Clinical Medicine Oslo Norway
3. Oslo Centre for Biostatistics and Epidemiology Oslo University Hospital Oslo Norway
4. Division of Paediatric and Adolescent Medicine Oslo University Hospital Oslo Norway
5. Division of Obstetrics and Gynaecology Oslo University Hospital Oslo Norway
6. Astrid Lindgren Children’s Hospital Karolinska University Hospital Stockholm Sweden
7. Department of Women´s and Children´s Health Karolinska Institutet Stockholm Sweden
8. Genetic Unit Centre for Laboratory Medicine Østfold Hospital Trust Kalnes Norway
9. Faculty of Chemistry, Biotechnology and Food Science Norwegian University of Life Sciences Ås Norway