Pragst, Fritz
Krumbiegel, Franziska
Thurmann, Denise
Westendorf, Lena
Methling, Maximilian
Niebel, André
Hartwig, Sven
Article History
Received: 3 September 2019
Accepted: 11 December 2019
First Online: 21 January 2020
Compliance with ethical standards
: This study was conducted according to the Helsinki ethical principles for medical research involving human subjects of the World Medical Association.
: The authors declare that they have no conflict of interest.