Loeck, J.
von Lücken, H.-J.
Kehrl, W.
Loske, G.
Article History
First Online: 3 May 2019
Compliance with ethical guidelines
:
: G. Loske is a consultant for Lohmann & Rauscher GmbH & Co. KG. J. Loeck, H.-J. von Lücken and W. Kehrl declare that they have no competing interests.
: This article does not contain any studies with human participants or animals performed by any of the authors. Consent was obtained from all patients identifiable from images or other information within the manuscript. In the case of underage patients, consent was obtained from a parent or legal guardian.
: The supplement containing this article is not sponsored by industry.