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Article History

Received: 11 February 2019

Accepted: 9 April 2019

First Online: 29 April 2019

Ethics approval and consent to participate

: Ethical approval has been granted by the University of Stirling’s NHS, Invasive or Clinical Research Ethics Committee (NICR 17/18 Paper 35) and the Salvation Army’s Research and Development Unit’s Ethics Committee. NHS services are not being used, and the study team has received a view from the South East Scotland Research Ethics Service (NHS Lothian) that it does not need NHS ethical review under the terms of the Governance Arrangements for Research Ethics Committees. Any future minor and substantial amendments will be submitted to these committees for consideration, as well as updating the funder regarding changes to the protocol. Written informed consent will be sought from all participants in the study. The University of Stirling will act as sponsor for the research and will undertake regular audit (RIS, University of Stirling, Stirling, FK94LAExternalRef removed). The Project Management Team is responsible for ensuring the appropriate and timely implementation of the study. An independent Study Steering Committee will provide overall supervision for a trial on behalf of the study sponsor and study funder to ensure that the study is conducted to rigorous standards. A Patient and Public Involvement group (called Experts by Experience group) informs the study throughout and consists of people with lived experience of problem substance use and/or homelessness.

: Not applicable.

: The authors declare that they have no competing interests.

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