1 Department of Obstetrics and Gynecology (White, Hickey, Gilmour), Dalhousie University; IWK Health Centre (White, Hickey, Gilmour, Ansari); Department of Diagnostic Radiology (Ansari), Dalhousie University, Halifax, NS justinwhite@dal.ca.
2 Department of Obstetrics and Gynecology (White, Hickey, Gilmour), Dalhousie University; IWK Health Centre (White, Hickey, Gilmour, Ansari); Department of Diagnostic Radiology (Ansari), Dalhousie University, Halifax, NS.