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Authors
Torbjørnsen, Astrid http://orcid.org/0000-0003-2385-2452
Ribu, Lis
Rønnevig, Marit
Grøttland, Astrid
Helseth, Sølvi
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Article History
Received: 2 February 2019
Accepted: 28 August 2019
First Online: 6 September 2019
Ethics approval and consent to participate
: This study received ethical approval from The Regional Committees for Medical and Health Research Ethics in Norway (REC no 2010/427). All the participants provided signed informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
