Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (FOR1368)
Text and Data Mining valid from 2019-04-05
Received: 7 December 2018
Accepted: 25 March 2019
First Online: 5 April 2019
Compliance with ethical standards
: All authors declare that they have no conflict of interest.
: This study was approved by the Ruhr-Universität Bochum Ethics Committee. Written informed consent was obtained from all patients described in the prospective cohort study.
: The data sets used and analyzed during the current study are available from the corresponding author on reasonable request.