Article History
Received: 3 May 2020
Accepted: 13 July 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: This research has been approved by ethical committee of Western Sweden (Dnr: 702-18). Since data is from open data sources, any additional informed consent as part of this study was not appropriate, and the need for informed consent was waived by the ethics committee.
: Not applicable.
: The authors declare that they have no competing interests.