Funding for this research was provided by:
Linköpings Universitet
Article History
Received: 5 June 2018
Revised: 20 September 2018
Accepted: 24 September 2018
First Online: 6 October 2018
Compliance with ethical standards
:
: All applicable national and institutional guidelines for the use of animals were followed. More specifically, the study followed ethical requirements in Sweden and was approved by Uppsala ethical committee (permit number C 82/12).
: The authors declare that they have no competing interests.