1. Department of Infectious Diseases and Microbiology, University of Lübeck, Lübeck, Germany
2. German Center for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems, Lübeck, Germany
3. Department of Obstetrics and Gynecology, University Hospital of Schleswig-Holstein, Lübeck, Germany
4. Department of Pediatrics, University Hospital of Würzburg, Würzburg, Germany
5. Department of Obstetrics, University Hospital of Zurich, Zurich, Switzerland