Müller, Matthias J. http://orcid.org/0000-0001-9511-1093
Dieks, Jana K.
Backhoff, David
Schneider, Heike E.
Ruschewski, Wolfgang
Tirilomis, Theodor
Paul, Thomas
Krause, Ulrich
Article History
Received: 25 June 2018
Accepted: 7 September 2018
First Online: 25 September 2018
Compliance with ethical standards
: The study was approved by the institutional review board and fully complies with the Declaration of Helsinki.
: The authors declare that they have no conflict of interest.