Funding for this research was provided by:
The study was financially supported by grants from Uppsala University and The Swedish Society of Medicine
Text and Data Mining valid from 2018-11-20
Received: 12 October 2017
Accepted: 27 September 2018
First Online: 20 November 2018
Ethics approval and consent to participate
: Respondents gave informed consent to participation by returning a filled in questionnaire, and the study was approved by the ethical committee at the regional Ethical Committee of Clinical Investigation in Uppsala, with project identification code DNR 2013/269.
: Not applicable.
: All the authors declare that there is no potential competing interest.
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