Prochnau, D.
Fischer, H.
Mühlhammer, D.
Eggers, R.
Article History
Received: 7 July 2019
Accepted: 5 August 2019
First Online: 22 August 2019
Compliance with ethical guidelines
:
: D. Prochnau, H. Fischer, D. Mühlhammer and R. Eggers declare that they have no competing interests.
: For this article no studies with human participants or animals were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case. Additional written informed consent was obtained from all individual participants or their legal representatives for whom identifying information is included in this article.