Hansen, Jochim https://orcid.org/0000-0003-2097-733X
Steinmetz, Janina
Article History
First Online: 23 January 2019
Compliance with ethical standards
:
: Both authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the studies.