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Authors
Beldo, Sigurd K. http://orcid.org/0000-0003-2892-0098
Morseth, Bente
Christoffersen, Tore
Halvorsen, Peder A.
Hansen, Bjørge H.
Furberg, Anne-Sofie
Ekelund, Ulf
Horsch, Alexander
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Article History
Received: 24 June 2019
Accepted: 26 June 2020
First Online: 17 July 2020
Ethics approval and consents to participate
: The participants signed a written informed consent. Participants younger than 16 years of age brought written permission from their guardian and those aged 16 and above signed at the study site. The Regional Committee for Medical and Health Ethics has approved the study (2012/1663/REK nord).
: Not applicable.
: None.
