Received: 19 December 2019
Accepted: 19 August 2020
First Online: 10 September 2020
Ethics Approval and Consent to Participate
: The study was approved by the local ethics committee (reference number: 2013-13) and conducted according to the Declaration of Helsinki. Informed consent was obtained after verbal and written explanation of the experimental design.
: Not applicable.
: The authors, Lars Reinhardt, Stephan Schulze, Eduard Kurz, and René Schwesig, declare that they have no competing interests.