1 Department of Obstetrics and Gynecology, Faculty of Medicine, Université Laval, Quebec, QC, Canada; Harris Birthright Research Centre of Fetal Medicine, King's College Hospital, London, United Kingdom.
2 Department of Obstetrics and Gynecology, Faculty of Medicine, Université Laval, Quebec, QC, Canada. Electronic address: emmanuel.bujold@crchudequebec.ulaval.ca.