Funding for this research was provided by:
BODE Chemie GmbH (n/a)
Received: 31 January 2020
Accepted: 9 July 2020
First Online: 18 July 2020
Ethics approval and consent to participate
: The study was approved by the ethics commission of Charité-University Medicine Berlin (EA4/123/17).
: Not applicable.
: This trial was investigator initiated. BODE Chemie GmbH, a company of the HARTMANN group, funded the trial. S. Aghdassi, C. Schröder, E. Lemke, M. Behnke, P. Gastmeier and T. Kramer declare no further conflicts of interest. C. Plotzki and J. Wenk are employees of BODE Chemie GmbH. Throughout the study, P. Fliss was an employee of BODE Chemie GmbH.