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Article History

Received: 15 July 2019

Accepted: 11 November 2020

First Online: 25 November 2020

Ethics approval and consent to participate

: The Regional Committee for Medical and Health Research Ethics granted approval for the research project (REK 2014/1970), and all registry owners consented to their data being utilized. As the study utilised existing registry data, no written or verbal consent to participate was required.

: Not applicable.

: The authors declare that they have no competing interests.