Barthels, Friederike http://orcid.org/0000-0003-2801-2209
Müller, Romina
Schüth, Tobias
Friederich, Hans-Christoph
Pietrowsky, Reinhard
Article History
Received: 12 August 2019
Accepted: 5 December 2019
First Online: 12 December 2019
Compliance with ethical standards
:
: The authors declare that they do not have a conflict of interest.
: The study was approved by the local ethics committee of the Heinrich-Heine-University, Düsseldorf, Germany (no reference number assigned), and was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments.
: Informed consent was obtained from all individual participants included in the study.