Funding for this research was provided by:
Uppsala University
Article History
First Online: 27 March 2019
Compliance with Ethical Standards
: The Regional Ethics Committee of Uppsala, Sweden approved the present study and all patients signed informed consents (Dnr 2011/063). All procedures in the study were in accordance with the ethical standards of the national ethical board and the 1964 Helsinki Declaration.
: The authors declare that they have no conflict of interest.