Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01ER0816, 01ER1506)
Projekt DEAL
Article History
Received: 10 July 2020
Accepted: 28 October 2020
First Online: 7 November 2020
Ethics approval and consent to participate
: The BiDirect Study was approved by the ethics committee of the University of Münster and the Westphalian Chamber of Physicians in Münster, North-Rhine-Westphalia, Germany. Written informed consent for participation in the BiDirect Study was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.