Kuhl, Christiane K.
Keulers, Annika
Strobel, Kevin
Schneider, Hannah
Gaisa, Nadine
Schrading, Simone
Article History
Received: 19 September 2017
Accepted: 17 January 2018
First Online: 9 February 2018
Ethics approval and consent to participate
: All participants signed informed consent forms. The study was approved by the ethics committee of the University of Aachen, RWTH (OHRP IRB no. 00007576) under the vote EK 20517.
: All authors approved the manuscript and consented to its publication. All participants signed informed consent forms for publication.
: The authors declare that they have no competing interests.
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