Received: 5 March 2018
Accepted: 7 June 2018
First Online: 22 June 2018
Ethical approval and consent to participate
: The study is approved by the Regional Ethics Review Board at Umeå University (Registration number 97–76 and 2007-161 M) and conducted accordingly. All subjects signed an informed consent before entering the study.
: Written informed consent was obtained from the patients for publication of this report.
: The authors declare that they have no competing interests.
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