Gjestsen, Martha Therese
Brønnick, Kolbjørn
Testad, Ingelin
Article History
Received: 4 April 2018
Accepted: 20 August 2018
First Online: 3 September 2018
Ethics approval and consent to participate
: This project was approved by the The Regional Committee for Medical and Health Research Ethics, South East Norway (Ref # 2013/1070).
: Not applicable.
: The authors declare that they have no competing interests.
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