Kise, Nina Jullum
Roos, Ewa M.
Stensrud, Silje
Engebretsen, Lars
Risberg, May Arna
Funding for this research was provided by:
Helse Sør-Øst RHF
Article History
Received: 23 March 2018
Accepted: 17 October 2018
First Online: 16 November 2018
Compliance with ethical standards
:
: All authors have completed the Unified Competing Interest form at ExternalRef removed (available on request from the corresponding author) and declare that they have no support from any company for the submitted work; no relationships with any company that might have an interest in the submitted work in the previous 3 years; their spouses, partners, or children have no financial relationships that may be relevant to the submitted work; and they have no non-financial interests that may be relevant to the submitted work.
: This study was approved by the regional ethics committee of the Health Region of South-East Norway (reference No. 2009/230).