Funding for this research was provided by:
FolkhÀlsomyndigheten (03042-2016-2.3.2)
Article History
Received: 12 March 2019
Accepted: 30 June 2019
First Online: 24 July 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.