1 Department of Obstetrics and Gynaecology (Ferraro, Silverberg, Kingdom, Shirreff), University of Toronto; Department of Medicine (Ferraro, Silverberg), University of Toronto; Department of Obstetrics & Gynecology (Kingdom, Shirreff), Mount Sinai Hospital, Toronto, Ont.
2 Department of Obstetrics and Gynaecology (Ferraro, Silverberg, Kingdom, Shirreff), University of Toronto; Department of Medicine (Ferraro, Silverberg), University of Toronto; Department of Obstetrics & Gynecology (Kingdom, Shirreff), Mount Sinai Hospital, Toronto, Ont. Lindsay.Shirreff@sinaihealth.ca.