Funding for this research was provided by:
Bayerische Forschungsstiftung (AZ-1066-13)
Article History
Received: 1 September 2017
Accepted: 18 November 2017
First Online: 24 November 2017
Compliance with ethical standards
:
: This study was funded by the Bavarian Research Foundation (AZ-1066-13).
: The authors declare that they have no conflicts of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.