Walter, S.
Ragoschke-Schumm, A.
Lesmeister, M.
Helwig, S. A.
Kettner, M.
Grunwald, I. Q.
Fassbender, K.
Article History
First Online: 8 June 2018
Compliance with ethical guidelines
:
: S. Walter, A. Ragoschke-Schumm, M. Lesmeister, S.A. Helwig, M. Kettner, I.Q. Grunwald, and K. Fassbender 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.
: The supplement containing this article is not sponsored by industry.