Naseribafrouei, Ali http://orcid.org/0000-0001-5510-1317
Eliassen, Bent Martin
Melhus, Marita
Svartberg, Johan
Broderstad, Ann Ragnhild
Article History
Received: 5 October 2018
Accepted: 19 June 2019
First Online: 24 June 2019
Ethics approval and consent to participate
: The SAMINOR Study was approved by the Norwegian Data Inspectorate and by the Regional Committees for Medical and Health Research Ethics North (REC North). The committee also approved the present study with the approval number 2016/173. All participants gave written informed consent for medical research and to have their data linked to other registers or surveys.
: Not applicable.
: The authors declare that they have no competing interests.