Greimel, Felix
Dittrich, Gregor
Schwarz, Timo
Kaiser, Moritz
Krieg, Bernd
Zeman, Florian
Grifka, Joachim
Benditz, Achim
Article History
Received: 26 April 2018
First Online: 31 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from all individual participants included in the study.
: The study was approved by the local Ethics Committee with the approval number 16-101-0204 (IRB approval). Furthermore, the project was registered in the German Registry of Clinical Studies (DRKS) with the approval number DRKS00011803 (WHO register). The study was applied in accordance with the ethical standards of the Declaration of Helsinki 1975.