Kemper, M.
Zech, A.
Lazarovici, M.
Zwissler, B.
Prückner, S.
Meyer, O.
Article History
First Online: 22 July 2019
Compliance with ethical guidelines
:
: M. Kemper, A. Zech, M. Lazarovici, B. Zwissler, S. Prückner and O. Meyer declare that they have no conflict of interest concerning this study, neither in financial relationships, employment, brands, research funding, or other relationships.
: 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.