Heinemann, Frauke G.
Tolkach, Yuri
Deng, Mario
Schmidt, Doris
Perner, Sven
Kristiansen, Glen
Müller, Stefan C.
Ellinger, Jörg http://orcid.org/0000-0002-7526-0857
Article History
Received: 28 August 2017
Accepted: 11 January 2018
First Online: 23 January 2018
Ethics approval and consent to participate
: The study was approved by the ethic committee at the University Hospital Bonn (240/14). All patients gave written informed consent.
: Not applicable
: The authors declare that they have no competing interests.
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