Würth, Kristina Maria
Reiter-Theil, Stella
Langewitz, Wolf
Schuster, Sylvie
Article History
Received: 15 November 2017
Revised: 25 April 2018
Accepted: 12 July 2018
First Online: 24 August 2018
Compliance with Ethical Standards
: The Ethics Committee of Northwestern and Central Switzerland (EKNZ) approved the study.
: The authors declare that they do not have a conflict of interest.