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Article History

Received: 15 January 2017

Accepted: 14 August 2018

First Online: 21 August 2018

Ethics approval and consent to participate

: Since no sensitive personal data were collected from the interviewees, formal ethical approval was not required according to the Swedish Act (2003:460) concerning the Ethical Review of Research Involving Humans. Nonetheless, the study was retroactively approved by the Stockholm Regional Ethical Review Board (ref nr 2016/1013–31/4).All participants were informed about the aim of the study and procedure for data collection. This information included a standard formulation regarding the voluntary nature of study participation as well as the message that participants could leave the study at any time without any negative consequences. The interviewers obtained the participants’ written informed consent to participate before the interviews took place (see Additional file ).

: Participants’ informed consent to participate in the study included consent for publication of group-level results as well as unidentified interview excerpts.

: Author PB is part owner of a company that develops and distributes electronic life style interventions to the health care sector and private companies. All remaining authors declare that they have no competing interests.

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