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Article History

Received: 14 March 2018

Accepted: 13 November 2018

First Online: 21 November 2018

Ethics approval and consent to participate

: All participants received a letter describing the purpose and procedure of the study. The letter also stated that their participation was voluntary, that the study records would be kept confidential, and that their contributions would be unidentifiable in the final report. The study was explained and patients were asked by the physician to participate after a consultation meeting. All participants then signed a consent form. The Regional Ethics Committee in Gothenburg approved the study (Dnr: 025–12).

: Written consent from all patients was obtained to publish results based on the study data.

: The authors declare that they have no competing interests.

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