1. Centre of Reproduction Epidemiology, Tornblad Institute, Institution of Clinical Science, Lund University, Lund, Sweden;
2. Department of E-health and Strategic IT, Health and Medical Care Administration, Stockholm County Council, Stockholm, Sweden;
3. Department of Pediatrics, Karolinska University Hospital, Stockholm, Sweden;
4. Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden;
5. Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden; and
6. Department of Clinical Sciences and Education, Karolinska Institutet, Sachs’ Children’s and Youth Hospital, Stockholm, Sweden