Text and Data Mining valid from 2018-04-04
Received: 24 August 2017
Accepted: 16 March 2018
First Online: 4 April 2018
Ethics approval and consent to participate
: This study was approved by the ethical committee at the Norwegian Centre for Research Data (NSD). Consistent with the ethical clearance, return of filled questionnaire after being informed about the project, the voluntary nature of participation and treatment of data is to be considered as informed consent. Collected data concerns national policies and practices in the different countries and does not include personal data. Identifying markers, such as names and e-mail addresses of respondents were removed.
: Not applicable.
: The authors declare that they have no competing interest.
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