Sonntagbauer, M.
Koch, A.
Strouhal, U.
Zacharowski, K.
Weber, C. F.
Article History
Received: 3 October 2017
Revised: 12 December 2017
Accepted: 15 December 2017
First Online: 5 February 2018
Compliance with ethical guidelines
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: M. Sonntagbauer, A. Koch, U. Strouhal, K. Zacharowski and C.F. Weber 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.