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Article History

Received: 14 August 2017

Accepted: 13 February 2018

First Online: 23 February 2018

Ethics approval and consent to participate

: This study was approved by the National Research Ethics Service Committee West Midlands – Black Country (Ref./WM/0066). Written consent to participate was obtained from all participants.

: Written or verbal consent was obtained from all participants. Where verbal consent was obtained the researcher read the consent form to the participant at the beginning of the telephone interview and asked the participant to confirm that they agreed to each element on the form and to overall participation in the study. Following the interview a copy of the consent form signed by the researcher was posted to the participant.

: FG and AMS received grants from the UK National Institute of Health Research during the conduct of the study.

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