Affiliation: | a Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynaecology, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada b Department of Obstetrics and Gynaecology, St. Joseph's Health Care Centre, University of Toronto, Toronto, ON, Canada c Department of Obstetrics and Gynaecology, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada |