1. Department of Obstetrics and Gynecology; Södersjukhuset Hospital; Stockholm Sweden
2. Department of Clinical Science and Education and Department of Obstetrics and Gynecology; Karolinska Institute; Södersjukhuset Hospital; Stockholm Sweden
3. Division of Occupational and Environmental Medicine; Institute of Laboratory Medicine; Lund University; Lund Sweden
4. Department of Learning, Informatics, Management and Ethics; Medical Management Centre; Karolinska Institute; Stockholm Sweden
5. Department of Public Health and Clinical Medicine, Epidemiology and Global Health; Umeå University; Umeå Sweden
6. Department of Women's and Children's Health; Uppsala University; Uppsala Sweden
7. Department of Clinical Sciences/Pediatrics; Umeå University; Umeå Sweden
8. Astrid Lindgren's Children's Hospital; Karolinska University Hospital; Stockholm Sweden
9. Department of Obstetrics and Gynecology; Karolinska University Hospital; Stockholm Sweden
10. Department of Women's and Children's Health; Karolinska Institute; Stockholm Sweden