Morina, Naser
Schnyder, Ulrich
Klaghofer, Richard
Müller, Julia
Martin-Soelch, Chantal
Article History
Received: 21 April 2017
Accepted: 27 March 2018
First Online: 10 April 2018
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Canton of Zurich, Switzerland, and has therefore been performed in accordance with ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All participants provided written informed consent prior to study participation.
: Not applicable.
: The authors declare that they have no competing interests.
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