1. Department of Clinical Science, University of Bergen, 5020 Bergen, Norway
2. Children and Youth Clinic, Haukeland University Hospital, 5021 Bergen, Norway
3. Department of Public Health and Primary Care, Centre for Environment and Health KU Leuven, 3000 Leuven, Belgium
4. Department of Food Safety, Norwegian Institute of Public Health, 0213 Oslo, Norway
5. Center for Sustainable Diets, Norwegian Institute of Public Health, 0213 Oslo, Norway
6. Department of Epidemiology and Biostatistics, University at Albany, Albany, New York 12144, United States
7. Centre for Fertility and Health, Norwegian Institute of Public Health, 0213 Oslo, Norway
8. Department of Global Public Health and Primary Care, University of Bergen, 5020 Bergen, Norway
9. Medical Biochemistry and Pharmacology, Haukeland University Hospital, 5021 Bergen, Norway
10. Department of Health Registry Research and Development, Norwegian Institute of Public Health, 5808 Bergen, Norway