Zipp, Aileen
Eissing, Günter http://orcid.org/0000-0003-1571-9205
Article History
Received: 3 November 2017
Accepted: 1 May 2018
First Online: 17 May 2018
Compliance with ethical standards
:
: 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.