1. Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children’s Hospital/University Medical Center Utrecht, Utrecht, the Netherlands
2. Spaarne Gasthuis Academy, Hoofddorp, the Netherlands
3. Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, the Netherlands
4. Medical Research Council/University of Edinburgh Centre for Inflammation Research, Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, United Kingdom
5. Microbiology and Systems Biology Group, Netherlands Organisation for Applied Scientific Research, Zeist, the Netherlands
6. Department of Obstetrics and Gynaecology, Spaarne Gasthuis, Hoofddorp, the Netherlands
7. Biostatistics and Research Support, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands; and
8. Department of Preventive Dentistry, Academic Center for Dentistry Amsterdam, University of Amsterdam and Vrije University Amsterdam, Amsterdam, the Netherlands