1. CHU Sainte-Justine Research Center, Department of Obstetrics and Gynecology, University of Montreal, Montréal, Canada
2. Faculty of Dentistry, University of Montreal, Montréal, Canada
3. Faculty of Dentistry, McGill University, Montréal, Canada
4. Department of Obstetrics and Gynecology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, and Prosserman Centre for Population Health Research, University of Toronto, Toronto, Canada