1 Materno-fetal and Obstetrics Research Unit, Department "Femme-Mère-Enfant", University Hospital, Lausanne, Switzerland; Institute of Microbiology, Faculty of Biology and Medicine, University of Lausanne and University Hospital, Lausanne, Switzerland. Electronic address: david.baud@chuv.ch.
2 Department of Obstetrics and Gynecology, Division of Woman and Child, University Hospitals Leuven, Leuven, Belgium.
3 Unit of Emerging Infectious Diseases, Institut Louis Malardé, Tahiti, French Polynesia.
4 Clinic of Neonatology, Department "Femme-Mère-Enfant", University Hospital, Lausanne, Switzerland.
5 School of Pharmaceutical Sciences, University of Geneva and University of Lausanne, Geneva, Switzerland; Swiss Teratogen Information Service and Division of Clinical Pharmacology, University Hospital of Lausanne, Lausanne, Switzerland; Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA.
6 Materno-fetal and Obstetrics Research Unit, Department "Femme-Mère-Enfant", University Hospital, Lausanne, Switzerland; Institute of Microbiology, Faculty of Biology and Medicine, University of Lausanne and University Hospital, Lausanne, Switzerland.