Funding for this research was provided by:
Karolinska University Hospital
Text and Data Mining valid from 2019-12-01
Received: 21 December 2018
Accepted: 21 November 2019
First Online: 12 December 2019
Ethics approval and consent to participate
: Ethical approval for this study was applied for at the regional Ethical Review Board in Stockholm with the decision that it was not applicable (dnr 2012/1662–31/5). Informed written consent was obtained from all participants before taking part in survey.
: Not applicable.
: We have read and understood Bio Med Centrals policy on declaration of interests and declare that we have no competing interests.