Stiel, Stephanie
Nurnus, Mareike
Ostgathe, Christoph
Klein, Carsten
Article History
Received: 16 January 2017
Accepted: 5 March 2018
First Online: 13 March 2018
Ethics approval and consent to participate
: The study plan was presented to the ethics committee of the medical faculty of Erlangen. A formal approval was not regarded to be necessary, because no patients were involved in this investigation.
: Not applicable.
: The authors declare that they have no competing interests.
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