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Article History

Received: 13 June 2019

Accepted: 20 September 2019

First Online: 11 October 2019

Ethics approval and consent to participate

: The Check-In study was notified to the Danish Data Protection Agency (J.no. 16/100534) and a notification regarding the project was made to the National Committee on Health Research Ethics. However, according to the Act on Research Ethics Review of Health Research Projects (section 14.2), projects such as Check-In do not need ethical approval from a Research Ethics Board (Protocol no.: H-1-2013-FSP). The trial is registered at (ID NCT01979107; October 25, 2013). Participation in the trial was voluntary, and the information material highlighted the option to withdraw without further explanation and without consequences for any treatment or other contact with the GP. At the health checks the GPs further informed the patients about the project and patients provided written informed consent. Moreover, the GPs were informed that the data collected in this study would be used for research. All data – quantitative as well as qualitative – was analysed anonymously. All GPs participating in the interviews were informed about the aim, scope, anonymity and the options to withdraw verbally at the start of the interviews.

: Not applicable.

: The authors declare that they have no competing interests.