Bringsvor, Heidi B. http://orcid.org/0000-0003-2158-7640
Langeland, Eva http://orcid.org/0000-0003-3594-2877
Oftedal, Bjørg Frøysland http://orcid.org/0000-0002-6320-8509
Skaug, Knut
Assmus, Jörg
Bentsen, Signe Berit
Funding for this research was provided by:
Helse Vest (2013/911836)
Article History
Accepted: 8 June 2019
First Online: 18 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: The present study was approved by the Regional Committees of Medical and Health Research Ethics (no. 2013/1741). All procedures performed were in accordance with the ethical standards of the research committee and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.