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Article History

Received: 20 August 2020

Accepted: 28 April 2021

First Online: 13 May 2021

Declarations

:

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee, the Stockholm regional ethics board (<i>Etikprövningsnämnden</i>, EPN, permit record numbers #2008/51–31/3 and #2011/438–32) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Written informed consent was obtained from all patient participants, and oral consent was obtained from professionals, in accordance with both the procedures permitted by the research ethics board and Swedish praxis at the time.

: Not applicable.

: The authors declare that they have no competing interests.