Kiesewetter, I.
Bartels, U.
Bauer, A.
Schneider, G.
Pilge, S.
Article History
Received: 8 June 2019
Revised: 2 September 2019
Accepted: 16 October 2019
First Online: 20 November 2019
Compliance with ethical guidelines
:
: I. Kiesewetter, U. Bartels, A. Bauer, G. Schneider and S. Pilge declare that they have no competing interests.
: 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 1975 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
Free to read: This content has been made available to all.