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Authors
Gjestvang, Christina
Bratland-Sanda, Solfrid
Mathisen, Therese Fostervold http://orcid.org/0000-0003-3687-583X
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Article History
Received: 17 May 2021
Accepted: 13 July 2021
First Online: 2 September 2021
Declarations
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: This study was approved by the Norwegian Regional Committees for medical and health research ethics (No.28855) and the Norwegian Centre for Research Data (No.868768), and was registered in the Clinical Trial Registry (No. ExternalRef removed). The participants consented to participation by responding to an e-mail containing study information and a letter of informed consent following the Helsinki Declaration. The consent and questionnaire were made by the web-based system SurveyXact 8.2 offered by Ramböll, Aarhus, Denmark.
: N.a.
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
