Funding for this research was provided by:
Received: 19 December 2019
Accepted: 24 July 2020
First Online: 27 August 2020
Change Date: 17 September 2020
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/S12913-020-05714-4
Ethics approval and consent to participate
: Data was obtained with ethical approval (Dnr. 2015/94–31) from the Regional Ethical Review Board in Linköping, Sweden.
: Not applicable.
: The authors declare that they have no competing interests.