1 Department of Obstetrics and Gynecology, University of Toronto, Toronto, ON. Electronic address: yannay.khaikin@mail.utoronto.ca.
2 Temerty Faculty of Medicine, University of Toronto, Toronto, ON.
3 Department of Obstetrics and Gynecology, University of Toronto, Toronto, ON; DAN Women and Babies Program, Sunnybrook Health Sciences Centre, Toronto, ON.