König, Laila https://orcid.org/0000-0001-8402-6694
Dreyling, Martin
Dürig, Jan
Engelhard, Marianne
Hohloch, Karin
Viardot, Andreas
Witzens-Harig, Mathias
Kieser, Meinhard
Klapper, Wolfram
Pott, Christiane
Herfarth, Klaus
Article History
Received: 7 December 2018
Accepted: 24 July 2019
First Online: 30 August 2019
Ethics approval and consent to participate
: The Heidelberg Ethics Committee approved this study on June 6, 2016 (AFmu-316/2017). Consent to participate/informed consent will be obtained from all participants in the study.Central ethical approval has been confirmed from the Heidelberg Ethics Committee (reference approval number: AFmu-316/2017) and we will not begin recruiting at other centers in the trial until local ethical approval has been obtained.
: Not applicable
: The authors declare that they have no competing interests.