Funding for this research was provided by:
Bundesministerium für Wirtschaft und Energie (731117 GEOTHERMICA)
Received: 11 March 2020
Accepted: 6 July 2020
First Online: 14 July 2020
Ethics approval and consent to participate
: In this study, no human participants, human data or human tissue was used. The manuscript does not report on or involve any animals, humans, human data, human tissue or plants.
: The authors declare that they have no competing interests.