1. Department of Social and Preventive Medicine, Université de Montréal, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Canada;
2. Women’s Health Research Institute, British Columbia Women’s Hospital and Health Centre, Vancouver, Canada;
3. Biochemistry Laboratory, CHU Sainte-Justine, Montreal, Canada;
4. Department of Obstetrics and Gynecology, Université de Montréal, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Canada