Funding for this research was provided by:
Text and Data Mining valid from 2019-08-13
Received: 29 November 2018
Accepted: 23 July 2019
First Online: 13 August 2019
Ethics approval and consent to participate
: Final ethical approval has been provided on 27 June 2018. (number FF104/2017). Clinical trial registration (registration date 1 October 2018) in the German Clinical Trials Register received the identification number DRKS00015313. All participants provided their informed consent.
: Not applicable.
: The authors declare that they have no competing interests.