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Article History

Received: 3 August 2016

Accepted: 1 May 2018

First Online: 8 May 2018

Ethics approval and consent to participate

: Ethical approval for the study has been given by the University of Bath Research Ethics Approval Committee for Health (approval date: 24th November 2014; REACH reference number: EP 14/15 66). Other countries’ study leads have been asked to achieve local ethical approval when needed.As well as a model email survey invitation to be translated and sent to potential participants, Örenäs Research Group local leads have been provided with a model Participant Information Sheet. Respondents who accept the invitation to take part in the study are taken to the survey introductory page, where they are given information about the project, information on the time it will take to complete the questionnaire, an assurance that their answers are confidential, and a statement that their names and contact details will not be requested. Participants are asked to click on a link to confirm that they agree to take the survey before they are able to continue. This action is considered as consent to participate in the study.

: The authors declare that they have no competing interests.

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