Funding for this research was provided by:
Vetenskapsrådet (VR – 2011-05646)
Stiftelsen för Strategisk Forskning (ICA10-0015)
Received: 14 November 2017
Accepted: 10 January 2018
First Online: 6 February 2018
: The experiments were carried out in accordance with the recommendations of the ethical committee of Uppsala Djurförsöketiska Nämnd (permit number C80/13).
: Not applicable
: The authors declare that they have no competing interests
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