1 Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Dermatology, Oslo University Hospital, Oslo, Norway. Electronic address: kimsinmail@gmail.com.
2 Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Dermatology, Oslo University Hospital, Oslo, Norway.
3 Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
4 Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Dermatology, Oslo University Hospital, Oslo, Norway.
5 Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden; Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.
6 Genetic Unit, Centre for Laboratory Medicine, Østfold Hospital Trust, Kalnes, Norway; Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway.
7 Oslo Centre for Biostatistics and Epidemiology, Oslo University Hospital, Oslo, Norway.
8 Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Division of Obstetrics and Gynaecology, Oslo University Hospital, Oslo, Norway.
9 Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.
10 Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden; Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.
11 Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
12 Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway.
13 Department of Toxicology and Risk Assessment, Norwegian Institute of Public Health, Oslo, Norway.
14 Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway.
15 Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; VID Specialized University, Oslo, Norway.
16 Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Obstetrics and Gynaecology, Østfold Hospital Trust, Kalnes, Norway.
17 Department of Obstetrics and Gynaecology, Østfold Hospital Trust, Kalnes, Norway; Department of Obstetrics and Gynaecology, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden.