Gjesdal, Grunde
Braun, Oscar Ö.
Smith, J. Gustav
Scherstén, Fredrik
Tydén, Patrik
Article History
Received: 25 May 2017
Accepted: 10 January 2018
First Online: 18 January 2018
Ethics approval and consent to participate
: Prior to data extraction, the institutional review board (The Regional Ethical Review Board in Lund) exempted the study from formal review as the project was performed as part of a quality assessment program.
: Not applicable.
: The authors declare that they have no competing interests.
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