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Article History

Received: 18 June 2020

Accepted: 17 November 2020

First Online: 3 December 2020

Ethics approval and consent to participate

: Ethical approval for the 2013 and 2014 surveys was obtained from the Oxford A Research Ethics Committee (reference number 12/SC/0317). All participants gived informed consent for all stages of the interview and nurse visit process. Written consent was obtained in a booklet, which was signed by the participant and countersigned by the interviewer or nurse. The consent booklets were supplemented by information leaflets, and by information provided by the interviewer or nurse. No administrative permission was required to access the dataset as the data are anonymised and can be downloaded by staff and students of UK universities from the UK data service. The links below prove the eligibility for this service and that the HSE is one of the surveys available from the service. ..

: Not applicable.

: The authors declare no competing interests.