Funding for this research was provided by:
The authors acknowledge the financial support from C4I center, Sahlgrenska University Hospital
Konrad and Helfrid Johanssons fundation
Received: 18 September 2017
Accepted: 2 January 2018
First Online: 22 January 2018
Ethics approval and consent to participate
: Ethical approval was obtained by the Regional Ethics Review Board at the region of Västra Götaland, Gothenburg, Sweden (Dnr 888–14). All procedures performed were in accordance with the Regional Ethics Review Board and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Oral and written informed consent was obtained from all individual participants included in the study.
: Not applicable
: The authors declare that they have no competing interests.
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