Gerum, Sabine
Heinz, Christian
Belka, Claus
Walter, Franziska
Paprottka, Philipp
De Toni, Enrico N.
Roeder, Falk
Article History
Received: 28 February 2018
Accepted: 16 May 2018
First Online: 29 May 2018
Ethics approval and consent to participate
: The study was approved by the Ethics committee of the University of Munich (LMU), reference number 617–16.
: The authors declare that they have no competing interests.
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