Leu, S.
Vuille-dit-Bille, R. N.
Fink, L.
Soll, C.
Staerkle, R. F.
Article History
Received: 25 March 2020
Accepted: 6 April 2020
First Online: 29 April 2020
Compliance with ethical guidelines
:
: S. Leu, R.N. Vuille-dit-Bille, L. Fink, C. Soll, and R.F. Staerkle declare that they have no competing interests.
: This research study was granted ethical approval by the Cantonal Ethics Committee of Zurich, Switzerland (reference number: Req-2016-00518).