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