1. Department of Women’s and Children’s Health Karolinska Institutet Stockholm Sweden
2. Faculty of Medicine Institute of Clinical Medicine University of Oslo Oslo Norway
3. Department of Dermatology and Venerology Oslo University Hospital Oslo Norway
4. Astrid Lindgren Children’s Hospital Karolinska University Hospital Stockholm Sweden
5. Dermatology Unit Department of Medicine Solna Karolinska Institutet and Karolinska University Hospital Stockholm Sweden
6. Division of Paediatric and Adolescent Medicine Oslo University Hospital Oslo Norway
7. Department of Environmental Health Norwegian Institute of Public Health Oslo Norway
8. Division of Obstetrics and Gynaecology Oslo University Hospital Oslo Norway
9. Faculty of Chemistry, Biotechnology and Food Science Norwegian University of Life Sciences Ås Norway
10. Genetic Unit Centre for Laboratory Medicine Østfold Hospital Trust Kalnes Norway
11. Folkhälsan Research Center Helsinki Finland
12. Department of Biosciences and Nutrition Karolinska Institutet Huddinge Sweden
13. Stem Cells and Metabolism Research Program University of Helsinki Helsinki Finland
14. Oslo Centre for Biostatistics and Epidemiology Oslo University Hospital Oslo Norway