Alberer, Martin
Malinowski, Svea
Sanftenberg, Linda
Schelling, Jörg
Article History
Received: 11 October 2017
Accepted: 16 March 2018
First Online: 3 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This study has been approved by the ethics committee of the Ludwig-Maximilians-University (LMU), Munich, Germany and has, therefore, been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.