Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (GE2353/2-1)
Helmut-Schmidt-Universität Universität der Bundeswehr Hamburg
Article History
Received: 18 January 2022
Accepted: 8 March 2022
First Online: 22 March 2022
Declarations
:
: The results presented only refer to a secondary data analysis. The original study [] had been conducted following the rules of the Declaration of Helsinki of 1975, revised in 2013. The retrospective analysis was approved by the ethics committee of the Justus-Liebig-University Giessen (Az 97/14).
: Not applicable (secondary data analysis).
: The authors declare that they have no competing interests.