Funding for this research was provided by:
Universitätsklinikum RWTH Aachen
Text and Data Mining valid from 2020-01-15
Received: 27 July 2019
Accepted: 20 December 2019
First Online: 15 January 2020
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: The work has been carried out in accordance with the code of ethics of the World Medical Association (Declaration of Helsinki) for experiments involving humans. Ethics approval was given by the local ethics committee (ID 082013).