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