Received: 9 July 2020
Accepted: 4 October 2021
First Online: 6 November 2021
: The study was approved by the Ethics Committee of the Faculty of Medicine at the University of Rostock (A 2017-0149) and has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. The manuscript does not contain clinical studies or patient data.
: Not applicable.
: The authors declare that they have no conflict of interest.