Funding for this research was provided by:
FP7 Ideas: European Research Council (305340)
Universitetet i Bergen
Haraldsplass Deaconess Hospital
Received: 16 August 2017
Accepted: 20 February 2018
First Online: 27 February 2018
Ethics approval and consent to participate
: The study underwent institutional ethics review and approval (2010/1406 Regional Ethics Committee West, Norway). Written informed consent was obtained from participants. All experiments were carried out in full accordance with the approved ethics applications specified above.
: Not applicable
: The authors declare that they have no competing interests.
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