Vabo, Stein
Steen, Knut
Brudvik, Christina
Hunskaar, Steinar
Morken, Tone
Article History
Received: 28 October 2021
Accepted: 11 July 2022
First Online: 30 July 2022
Declarations
:
: We confirm that all methods were performed in accordance with the relevant guidelines and regulations with the declaration of Helsinki. Informed consent was obtained from all patients and from parents/legal guardians of minors for participation in the study by answering the questionnaire.The project was approved by the Regional Committee for Medical and Health Research, Western Norway, University of Bergen. post@helseforskning.etikkom.no (Ethics approval no. 2015/59).
: Not applicable.
: The authors declare that they have no competing interests.