Ahmad, Sufian S.
Schreiner, Anna J.
Hirschmann, Michael T.
Schröter, Steffen
Döbele, Stefan
Ahrend, Marc D.
Stöckle, Ulrich
Ateschrang, Atesch
Article History
Received: 7 July 2018
Accepted: 14 November 2018
First Online: 26 November 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Given the type of study, an ethical approval was not necessary for the conduction of this study.