Funding for this research was provided by:
Universitätsklinikum der Ruhr-Universität Bochum
Received: 11 January 2021
Accepted: 27 March 2021
First Online: 13 April 2021
: The authors have no relevant financial or non-financial interests to disclose.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Ethics Committee of the Medical University of Ruhr-University Bochum, Germany (No. 5090-14 and 16-5749).
: Informed consent was obtained from all individual participants included in the study.