Kupsch, Juliane
Jackisch, Thomas
Matzel, Klaus E.
Zimmer, Joerg
Schreiber, Andreas
Sims, Anja
Witzigmann, Helmut
Stelzner, Sigmar http://orcid.org/0000-0001-7804-196X
Article History
Accepted: 1 March 2018
First Online: 15 March 2018
Compliance with ethical standards
: Ethical approval was obtained from the responsible ethics committee (Saxon Physicians Chamber, No. EK-BR-92/15-1/134619).