Frick, Sven
Müller, Daniel
Kullak-Ublick, Gerd A.
Jetter, Alexander http://orcid.org/0000-0002-7394-2192
Article History
Received: 24 September 2018
Accepted: 18 December 2018
First Online: 4 January 2019
Compliance with ethical standards
: The study was approved by the Ethics Committee of the Canton of Zurich, Switzerland (BASEC-Nr. 2017-02317).
: All authors declare that they have no conflict of interest.