Funding for this research was provided by:
Ruhr-Universität Bochum (IN-1214264)
Text and Data Mining valid from 2020-04-19
Received: 9 December 2019
Accepted: 3 April 2020
First Online: 19 April 2020
Ethics approval and consent to participate
: This study was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the ethical committee of the Ruhr-University Bochum. All participants gave written informed consent prior to being enrolled in the study.
: Not applicable.
: The authors declare that they have no competing interests.