Funding for this research was provided by:
Interreg (094 -1.1-18)
Received: 27 October 2020
Accepted: 17 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: The study was approved by the local ethics committee (University of Lübeck, ref. 16-163). It was conducted in accordance with principles of the Declaration of Helsinki and Good Clinical Practice.
: Not applicable.
: The authors declare that they have no competing interests related to this study.