Becker, Janek http://orcid.org/0000-0002-9522-7528
Berger, Felix
Schindlbeck, Katharina A.
Poddubnyy, Denis
Koch, Peter M.
Preiß, Jan C.
Siegmund, Britta
Marzinzik, Frank
Maul, Jochen
Article History
Accepted: 19 March 2018
First Online: 3 April 2018
Compliance with ethical standards
: The study was approved (16 January 2014) by the ethics committee of the Charité – Universitätsmedizin Berlin, Campus Benjamin Franklin (reference EA4/132/13).
: The authors declare that they have no conflict of interest.