Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (KFO 192/2 partial project 3)
Berlin Institute of Health (TRG 3)
Text and Data Mining valid from 2019-09-10
Received: 22 March 2019
Accepted: 15 July 2019
First Online: 10 September 2019
Ethics approval and consent to participate
: The study was approved by the institutional review board of the Charité – Universitätsmedizin Berlin. Written informed consent was provided by study participants or legal proxies (Charité EA 2/041/10).
: Not applicable
: The authors declare that they have no competing interests.