Updates are available Correction dated 2019-07-08

Article History

Received: 15 February 2019

Accepted: 22 April 2019

First Online: 13 June 2019

Change Date: 8 July 2019

Change Type: Correction

Change Details: Following publication of the original article [1], the author reported that Table 3 was given the incorrect heading.

Ethics approval and consent to participate

: The study was approved by the Regional Ethical Review Board in Stockholm (reference number 2015/564–31/5), which did not consider it to include any sensitive personal information. Participation was voluntary, the data coded in order to retain anonymity, and the students were informed that participation had no effect on their grades and they could stop at any time without consequences.

: All participants gave their informed consent for the research data to be included in a published article, without identifiable information.

: The authors declare that they have no competing interests.

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