Text and Data Mining valid from 2020-02-03
Received: 25 September 2019
Accepted: 9 January 2020
First Online: 3 February 2020
Ethics approval and consent to participate
: The survey was approved by the Regional Board of Ethics, Uppsala (EPN 2012/256). The respondents gave their informed consent to participate by answering the questionnaire.
: Not applicable.
: The authors declare that they have no competing interests.