1 Department of Obstetrics and Gynecology (A. Sanders), University of Toronto, Mount Sinai Hospital, Toronto Ont.; Department of Obstetrics and Gynecology (B. Sanders), University of British Columbia, BC Women's Hospital & Health Centre, Vancouver, BC arisanders@hotmail.com.
2 Department of Obstetrics and Gynecology (A. Sanders), University of Toronto, Mount Sinai Hospital, Toronto Ont.; Department of Obstetrics and Gynecology (B. Sanders), University of British Columbia, BC Women's Hospital & Health Centre, Vancouver, BC.