Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (KA 4199/1-1, WO 1746/1-2)
Department of Terrestrial Magnetism, Carnegie Institution of Washington (115737-2)
Text and Data Mining valid from 2019-12-01
Received: 9 July 2019
Accepted: 25 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: All patient data was anonymized in accordance with German law. Written consent was thus determined to not be necessary. The study’s use of the data was approved by the University of Freiburg Ethics committee.
: Not applicable – no individual person’s data in any form used.
: The authors declare that they have no competing interests.