Article History
First Online: 28 August 2020
Declarations
:
: No funding was received for the preparation of this article.
: Staffan Hägg, Johan Ahlner, and Anna Jönsson have no conflicts of interest that are directly relevant to the content of this article.
: In Sweden, approval by an ethics committee is not needed for a review study using previously published data.
: Not applicable.
: Not applicable.
: Data sharing is not applicable to this article as no datasets were generated or analyzed during the current study.
: Not applicable.
: Conception and design: SH, JA, AJ. Acquisition, analysis, or interpretation of data: SH, JA, AJ. Drafting of the manuscript: SH, JA, AJ. Critical revision of the manuscript for important intellectual content: SH, JA, AJ.