- Correspondence to Neda Razaz, Women's Hospital of British Columbia, Room C403—4500 Oak Street, Vancouver, British Columbia, Canada V6H 3N1;
- Received February 21, 2015
- Revised June 2, 2015
- Accepted June 11, 2015
- First published July 17, 2015.
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- Data supplement 1 - Online supplement
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