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Authors
Kullinger, Merit https://orcid.org/0000-0003-3603-7983
Granfors, Michaela
Kieler, Helle
Skalkidou, Alkistis
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Article History
Received: 14 September 2018
Accepted: 25 June 2019
First Online: 4 July 2019
Ethics approval and consent to participate
: The Regional Ethical Review Board in Uppsala, Sweden, approved the study (reference number 2012/412, amendment approved November 15, 2017). Consent to participate is not applicable.
: Not applicable.
: The authors declare that they have no competing interests.
