Hammersland, Marte H. http://orcid.org/0000-0002-1796-969X
Aarsand, Aasne K.
Sandberg, Sverre
Andersen, Janice
Article History
Received: 10 October 2018
Accepted: 19 June 2019
First Online: 3 July 2019
Ethics approval and consent to participate
: All procedures were in accordance with the ethical standards of the Helsinki Declaration of 1975, as revised in 2000. The study was approved by the Norwegian Regional Ethics Committee (2010/1140). Written informed consent was obtained from all included patients.
: Not applicable.
: The authors declare that they have no competing interests.