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Article History

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.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.