Hjelle, Anja M.
Apalset, Ellen M.
Gjertsen, Jan-Erik
Nilsen, Roy M.
Lober, Anja
Tell, Grethe S.
Mielnik, Pawel F.
Article History
Received: 21 April 2021
Accepted: 5 August 2021
First Online: 23 August 2021
Declarations
:
: All participants signed a written informed consent form, and the study protocol was approved by the Regional Committee for Medical and Health Research Ethics (REC West). All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.