Funding for this research was provided by:
Text and Data Mining valid from 2020-05-07
Received: 29 July 2019
Accepted: 23 April 2020
First Online: 7 May 2020
Ethics approval and consent to participate
: The Cantonal Ethics Committee Zurich waived the need for ethics approval. The study does not fall under the 810.30 Federal Act of 30 September 2011 on Research involving Human Beings (Human Research Act, HRA). Participants or, in case of severe impairments, their legal representatives (e.g., parents) gave oral and written consent to participate in the study prior to the interviews.
: Not applicable.
: The authors declare that they have no competing interests.