Funding for this research was provided by:
Received: 27 December 2021
Accepted: 12 April 2022
First Online: 25 July 2022
: The regional ethics committee (EC,Canton Zurich) approved the study (June 2016, BASEC-Nr. 2016-00316). Data collection was conducted in accordance with Good Clinical Practice protocols and the Declaration of Helsinki principles. All participants received written and oral information about the study. Written informed consent was obtained from all participants prior to focus groups.
: Not applicable.
: The authors declare no competing interests.