Gavrilovic Haustein, Natalija
Freudiger, Maurice
Hunziker, Anna
Hepp, Urs
Jellestad, Lena
von Känel, Roland
Stulz, Niklaus
Article History
Received: 21 February 2022
Accepted: 17 June 2022
First Online: 25 June 2022
Declarations
:
: The responsible ethics committee of the canton of Zurich declared that the retrospective study does not fall within the scope of the Swiss Human Research Act (HRA). Therefore, the approval of study protocols and the need of informed consent were waived by the ethics committee of the canton of Zurich (BASEC-Nr. Req-2020–00922). The study was carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.