Funding for this research was provided by:
Universitätsklinikum Köln
Article History
Received: 9 November 2021
Revised: 29 March 2022
Accepted: 31 March 2022
First Online: 18 April 2022
Declarations
:
: Study design and data collection was in accordance with the ethical principles of the 1964 Declaration of Helsinki and its later amendments. Approval was granted by the local Ethics Committee of the University of Cologne.
: The authors declare no competing interests.