1. Department of Social and Preventive Medicine, Université de Montréal, Montreal, QC H3N 1X9, Canada
2. Sainte-Justine Hospital Research Center, Montreal, QC H3T 1C5, Canada
3. Centre de Recherche du CHUM (CRCHUM), Montreal, QC H2X 0A9, Canada
4. Department of Obstetrics and Gynecology, Université de Montréal, Montreal, QC H3N 1X9, Canada
5. Department of Obstetrics and Gynecology, Sainte-Justine Hospital, Montreal, QC H3T 1C5, Canada
6. Division of Clinical Epidemiology, McGill University Health Center, Montreal, QC H4A 3J1, Canada
7. Department of Obstetrics and Gynecology, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada
8. Department of Obstetrics and Gynecology, St-Mary’s Hospital Center, Montreal, QC H3T 1M5, Canada
9. Department of Pediatrics, Division of Pediatric Intensive Care Medicine, Sainte-Justine Hospital, Montreal, QC H3T 1C5, Canada
10. Department of Pediatrics, Université de Montréal, Sainte-Justine Hospital, Montreal, QC H3T 1C5, Canada
11. Departement of Microbiology, Infectiology and Immunology, Université de Montréal, Montreal, QC H2X 0A9, Canada