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Authors
Ståhl, Christian https://orcid.org/0000-0003-3310-0895
Andersson, Frieda
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First Online: 12 February 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000.
: Informed consent was obtained from all participants for being included in the study.
