Retraction Retraction dated 2018-05-02

Article History

Received: 23 June 2017

Accepted: 31 October 2017

First Online: 13 November 2017

Change Date: 2 May 2018

Change Type: Correction

Change Details: This article [1] has been retracted at the request of the authors. Upon re-review of the data, the authors identified coding errors in this study.

Ethics approval and consent to participate

: The study was approved by the Ethical review board (ref. S02030) and by The Norwegian Data Inspectorate (ref. 2001/2988–2).

: Not applicable.

: The authors declare that they have no competing interests.

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