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Authors
Gonnella, Giorgio
Böhnke, Stefanie
Indenbirken, Daniela
Garbe-Schönberg, Dieter
Seifert, Richard
Mertens, Christian
Kurtz, Stefan
Perner, Mirjam
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Article History
Received: 5 November 2015
Accepted: 3 May 2016
First Online: 13 June 2016
Competing interests
: The authors declare no competing financial interests.
