Funding for this research was provided by:
Universität Witten/Herdecke gGmbH
Received: 9 December 2020
Accepted: 16 June 2021
First Online: 2 July 2021
: All methods were carried out in accordance with relevant guidelines (Helsinki Declaration) and national law. The study was approved according to the Research Ethics Committee at the Witten/Herdecke University (approval number 54/2019). All participants gave their written informed consent to participate in the study.
: Not applicate.
: The authors declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of the research reported.