Schuster, Philipp
Geßlein, Markus
Schlumberger, Michael
Mayer, Philipp
Bail, Hermann Josef
Richter, Jörg
Article History
Received: 23 October 2017
Accepted: 28 February 2018
First Online: 6 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the Ethical committee of the institution.
: Patients were informed, and they consented to conduct the study.