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Article History

Received: 23 July 2018

Accepted: 28 March 2019

First Online: 27 April 2019

Ethics approval and consent to participate

: Ethical Approval has been granted by the U.K. National Research Ethics Service, South West – Cornwall and Plymouth meeting. The study will be conducted in accordance with the Declaration of Helsinki []. Informed consent will be obtained following a multi-stage process. Participants will first give permission for the research team to contact them to discuss the study. Following this, informed consent will be taken in person by a study researcher (EW) prior to the baseline eligibility and assessment interview. Potential participants will receive full information about the study in advance of the interview, and at the point of consent there will be further opportunity to discuss the study and for the participant to raise any questions. Researchers will be fully trained in taking informed consent, including assessment of capacity to consent where appropriate. Consent will be taken only from individuals with capacity to make an informed decision on their participation.

: Not applicable.

: The authors declare that they have no competing interests.

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