Flechsig, Paul
Rastgoo, Ramin
Kratochwil, Clemens
Martin, Ole
Holland-Letz, Tim
Harms, Alexander
Kauczor, Hans-Ulrich
Haberkorn, Uwe
Giesel, Frederik L.
Article History
First Online: 20 April 2018
Compliance with Ethical Standards
: The study was approved by the institutional review board and conducted according to the guidelines of the institutional review board and to good clinical practice according to the ethical principles that have their origin in the Declaration of Helsinki. In this retrospective analysis, the requirement of informed consent was waived by the institutional review board.
: The authors declare that they have no conflict of interest.