Funding for this research was provided by:
Health Research Board (HRB HPF/2013/477)
Text and Data Mining valid from 2018-05-31
Received: 20 January 2017
Accepted: 21 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: The research ethics committees of the Faculty of Health Sciences Trinity College Dublin and the Rotunda hospital Dublin approved the study. Written consent was obtained, and only women who returned a completed signed consent form were included in this study.
: Valerie Smith is a member of the BMC Pregnancy and Childbirth Editorial Board. All remaining authors declare that they have no competing interests.
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