Received: 15 January 2020
Accepted: 12 February 2020
First Online: 24 February 2020
Ethics approval and consent to participate
: Kantonale Ethikkommission Zürich had given the approval for the study (BASEC-No. 2018-00856).
: The authors, their immediate families, and any research foundations with which they are affiliated have not received any financial payments or other benefits from any commercial entity related to the subject of this article. All authors have read and approved the final submitted manuscript.