Text and Data Mining valid from 2020-05-08
Received: 8 February 2020
Accepted: 29 April 2020
First Online: 8 May 2020
Ethics approval and consent to participate
: All procedures performed in studies were in accordance with the ethical standards of the institutional and/or national research committee (local approved by the ethic committee of the Faculty of Medicine, Kiel university: 411/18).
: Not applicable.
: Author C.G., J.R., K.S., Su.S., D.C., A.G., T.R., C.E.D. and So.S. declare that they have no competing interests.