Funding for this research was provided by:
Department of Health Policy Research Programme
Text and Data Mining valid from 2019-05-14
Received: 29 November 2017
Accepted: 10 April 2019
First Online: 14 May 2019
Ethics approval and consent to participate
: Ethical approval for the cognitive interviews was obtained from Oxford University Medical Sciences Interdivisional Research Ethics Committee (IDREC R46227/RE001) and for the survey of infant and maternal health from the NRES committee for Yorkshire and The Humber – Sheffield Research Ethics Committee (REC reference 16/YH/0412).Consent to participate was considered to be implicit in questionnaire completion and return. Consent to publish was not applicable.
: Not applicable.
: The authors Colin Martin Emily Savage-McGlynn and Sian Harrison declare they have no competing interests.The author, Maggie Redshaw is now an associate editor for BMC Pregnancy and Childbirth and declares an interest, but was not at the time of submission to the journal in 2017.
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