1. Department of Pediatrics, Karolinska University Hospital, Stockholm, Sweden
2. Division of Pediatrics, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
3. Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
4. Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
5. Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
6. Department of Medicine Huddinge, Karolinska Institutet, Stockholm, Sweden
7. Department of Infectious Diseases, University of Göteborg, Göteborg, Sweden
8. Department of Infectious, Diseases, Region Västra Götaland, Sahlgrenska University Hospital, Göteborg, Sweden
9. Public Health Agency of Sweden, Solna, Sweden
10. Department of Obstetrics and Gynecology, Karolinska University Hospital, Stockholm, Sweden
11. Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
12. Department of Clinical Virology, Karolinska University Hospital, Stockholm, Sweden
13. Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden