Article History
Received: 20 July 2017
Accepted: 27 November 2018
First Online: 12 December 2018
Ethics approval and consent to participate
: Prior to starting recruitment, ethical approval was granted by the North of Scotland Research Ethics Committee (reference number 13/NS/0156). R&D approval from NHS Grampian was also obtained as women were recruited from an NHS clinic.
: Not applicable.
: The authors declare that they have no competing interests.
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