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Authors
Källmén, Håkan
Hallgren, Mats http://orcid.org/0000-0002-0599-2403
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Funding
Funding for this research was provided by:
Karolinska Institute
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Article History
Received: 5 October 2021
Accepted: 23 November 2021
First Online: 14 December 2021
Declarations
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: As the data are completely anonymous, the study was exempt from ethical approval according to an earlier decision from the Ethical Review Board in Stockholm (2010-241 31-5).
: Not applicable.
: The authors declare that they have no competing interests.
