Keller, Titus http://orcid.org/0000-0001-6076-3438
Körber, Friederike
Oberthuer, André
Schafmeyer, Leonie
Mehler, Katrin
Kuhr, Kathrin
Kribs, Angela
Funding for this research was provided by:
no Funding
Article History
Received: 14 June 2018
Revised: 19 October 2018
Accepted: 22 October 2018
First Online: 1 November 2018
Compliance with ethical statements
:
: The authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required. Informed consent was obtained from all individual participants for whom identifying information is included in this article. The ethical board of the University of Cologne declared no ethical concerns (No. 17-057).