Received: 9 August 2019
Accepted: 7 February 2020
First Online: 27 February 2020
Ethics approval and consent to participate
: This study was approved by the Ethical Review Board of the University of Tübingen, Germany.
: All authors provided consent for publication.
: CC, MS, and HS are employees of Bruker Biospin. FT received honoraria from Bruker and BioMarin.