Funding for this research was provided by:
Norges Forskningsråd (217777/H10, 231764, 214458)
Helse Midt-Norge (90158300)
Text and Data Mining valid from 2019-03-29
First Online: 29 March 2019
Compliance with Ethical Standards
: The authors declare that they have no competing interests.
: The study was approved by the Norwegian council for animal research.