Article History
First Online: 12 April 2019
Compliance with ethical standards
:
: Author Florian U. Fischer, Author Dominik Wolf and Author Andreas Fellgiebel declare that they have no conflict of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, and the applicable revisions at the time of the investigation. Informed consent was obtained from all patients for being included in the study.
: No animal studies were carried out by the authors for this article.